Phlebotomy Tubes
Additives, colors and tests of phlebotomy tubes
Questions and Answers
- 1.
Contains EDTA
- A.
Light blue
- B.
Lavender
- C.
Red
- D.
Green
Correct Answer
B. LavenderExplanation
The correct answer is lavender because it is the only option that contains EDTA. EDTA is a chemical compound commonly used as a chelating agent in laboratory tests. The other colors mentioned in the question, light blue, red, and green, do not contain EDTA.Rate this question:
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- 2.
EDTA tubes must be
- A.
2/3 full
- B.
Completely full
- C.
1/2 full
Correct Answer
A. 2/3 fullExplanation
EDTA tubes must be 2/3 full because this ensures the correct blood to anticoagulant ratio. EDTA is an anticoagulant that prevents blood from clotting by binding to calcium ions. If the tube is not filled to the appropriate level, there may not be enough EDTA to properly prevent clotting, leading to inaccurate test results. On the other hand, if the tube is completely full, there may not be enough space for proper mixing of the blood and anticoagulant, which can also affect test results. Therefore, filling the EDTA tube 2/3 full strikes a balance between having enough anticoagulant and allowing for proper mixing.Rate this question:
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- 3.
Lavender tubes must be inverted ____ times.
- A.
0
- B.
4
- C.
5
- D.
8
Correct Answer
D. 8Explanation
Lavender tubes must be inverted 8 times to ensure proper mixing and prevent clotting. Inverting the tubes helps to mix the anticoagulant with the blood, preventing clot formation and ensuring accurate test results.Rate this question:
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- 4.
A __________ tube is used for a CBC.
- A.
Red
- B.
Green
- C.
Lavender
- D.
Light blue
Correct Answer
C. LavenderExplanation
A lavender tube is used for a CBC (Complete Blood Count) because it contains an anticoagulant called EDTA (Ethylenediaminetetraacetic acid) which prevents blood from clotting. This tube is specifically designed for collecting blood samples for hematological testing, such as counting red and white blood cells, measuring hemoglobin levels, and examining platelets. The lavender color of the tube indicates its specific use for CBC tests in order to obtain accurate and reliable results.Rate this question:
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- 5.
A ___________ tube is used for a WCB differential.
- A.
Lavender
- B.
Light blue
- C.
Red
- D.
Yellow
Correct Answer
A. Lavender -
- 6.
A ___________ tube is used for an ESR.
- A.
Red
- B.
Lavender
- C.
Green
- D.
Light blue
Correct Answer
B. LavenderExplanation
A lavender tube is used for an ESR (erythrocyte sedimentation rate) test. This test measures how quickly red blood cells settle at the bottom of a test tube over a certain period of time. The lavender tube contains an anticoagulant called EDTA, which prevents the blood from clotting during the test. This allows for accurate measurement of the sedimentation rate.Rate this question:
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- 7.
Sickle Cell Screening is done with what tube?
- A.
Light blue
- B.
Red
- C.
Lavender
- D.
Green
Correct Answer
C. LavenderExplanation
Sickle Cell Screening is done with a lavender tube because it contains an anticoagulant called EDTA, which helps prevent the blood from clotting. This is important for accurate testing as sickle cell screening involves analyzing the shape and structure of red blood cells. The lavender tube is commonly used for hematological tests, including complete blood count (CBC) and blood cell morphology examinations.Rate this question:
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- 8.
How many times should a light blue tube be inverted?
- A.
3-4
- B.
8
- C.
5
- D.
0
Correct Answer
A. 3-4Explanation
The correct answer is 3-4 because the question is asking how many times a light blue tube should be inverted. Inverting a tube means turning it upside down. The answer 3-4 suggests that the tube should be inverted three to four times, indicating that there is no specific number of times it needs to be inverted.Rate this question:
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- 9.
Light blue tubes contain
- A.
Heparin
- B.
Sodium citrate
- C.
EDTA
- D.
Fluoride
Correct Answer
B. Sodium citrateExplanation
The light blue tubes contain sodium citrate. Sodium citrate is an anticoagulant that prevents blood from clotting by binding to calcium ions. This allows the blood to be used for various tests, such as coagulation studies and blood typing. Sodium citrate is commonly used in laboratories and medical settings for its anticoagulant properties.Rate this question:
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- 10.
EDTA inhibits
- A.
Clotting
- B.
Coagulation
Correct Answer
B. CoagulationExplanation
EDTA is a chelating agent that binds to calcium ions, which are essential for the clotting process. By binding to these ions, EDTA prevents the formation of a stable fibrin clot and inhibits the coagulation or clotting process. Therefore, the correct answer is "coagulation."Rate this question:
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- 11.
Sodium Citrate is the anticoagulant used in
- A.
Coagulation studies
- B.
Chemistry studies
- C.
Blood sugar studies
Correct Answer
A. Coagulation studiesExplanation
Sodium citrate is used as an anticoagulant in coagulation studies because it prevents blood from clotting by binding to calcium ions, which are necessary for the clotting process. This allows for accurate measurement and analysis of clotting factors and other parameters related to coagulation. Sodium citrate is not used in chemistry studies or blood sugar studies as it does not have a specific role in these areas.Rate this question:
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- 12.
Light Blue tubes must be
- A.
2/3 full
- B.
Completely full
Correct Answer
B. Completely fullExplanation
The light blue tubes must be completely full because it is stated that they must be "completely full" in the given answer. This means that there should be no empty space or air bubbles in the tubes, and they should be filled to their maximum capacity.Rate this question:
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- 13.
Which tube is used for a PTT
- A.
Red
- B.
Light blue
- C.
Green
- D.
Yellow
Correct Answer
B. Light blueExplanation
The light blue tube is used for a PTT (Partial Thromboplastin Time) test. PTT is a blood test that measures the time it takes for blood to clot. This test is used to evaluate the function of the intrinsic pathway of the coagulation cascade and to monitor the effectiveness of heparin therapy. The light blue tube contains sodium citrate, which acts as an anticoagulant by binding to calcium ions and preventing blood clotting. Therefore, it is the appropriate tube for collecting blood samples for PTT testing.Rate this question:
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- 14.
BT tests are done with a _________ tube.
- A.
Light blue
- B.
Red
- C.
Tiger top
- D.
Green
Correct Answer
A. Light blueExplanation
BT tests are done with a light blue tube. The color of the tube is important in laboratory testing as it indicates the type of additive or anticoagulant present in the tube. Different colors represent different types of tubes used for specific tests. In the case of BT tests, a light blue tube is used because it contains sodium citrate as an anticoagulant. Sodium citrate prevents the blood from clotting, allowing for accurate testing of coagulation factors.Rate this question:
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- 15.
Green top tubes contain
- A.
Sodium Citrate
- B.
Heparin
- C.
EDTA
- D.
Nothing
Correct Answer
B. HeparinExplanation
Green top tubes contain heparin. Heparin is an anticoagulant that prevents blood from clotting by inhibiting the formation of blood clots. These tubes are used for collecting blood samples for various tests, such as blood gas analysis and certain chemistry tests. The heparin in the tube prevents the blood from clotting, allowing for accurate test results.Rate this question:
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- 16.
Heparin inhibits
- A.
Thrombin
- B.
Clotting
- C.
Glucose
Correct Answer
A. ThrombinExplanation
Heparin is a medication that inhibits the activity of thrombin, an enzyme involved in the clotting process. By inhibiting thrombin, heparin prevents the formation of blood clots. This is why heparin is commonly used as an anticoagulant medication to prevent and treat conditions such as deep vein thrombosis, pulmonary embolism, and heart attacks.Rate this question:
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- 17.
Green tubes must be inverted ___ times.
- A.
3-4
- B.
5
- C.
0
- D.
8
Correct Answer
D. 8 -
- 18.
Ammonia test is done with a _____ tube.
- A.
Red
- B.
Lavender on ice
- C.
Gray on ice
- D.
Light blue
Correct Answer
B. Lavender on iceExplanation
The correct answer is "lavender on ice" because the ammonia test is typically performed using a Nessler tube filled with a lavender-colored reagent that contains ice. This reagent reacts with ammonia to produce a yellow-brown color, allowing for the detection and measurement of ammonia levels in a sample. The use of ice helps to maintain the temperature and stability of the reaction, ensuring accurate results.Rate this question:
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- 19.
Which tube is used for a STAT electolyte test?
- A.
Red
- B.
Green
- C.
Yellow
- D.
Light blue
Correct Answer
B. GreenExplanation
A STAT electrolyte test is a test that needs to be done quickly, usually in emergency situations. The green tube is commonly used for STAT tests because it contains heparin, an anticoagulant that prevents blood clotting. This allows for immediate processing of the sample without any delays. The other tubes listed do not contain heparin or may have different additives, making them unsuitable for STAT electrolyte testing.Rate this question:
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- 20.
An antiglycolotic agent is found in all ____________ tubes
- A.
Red
- B.
Gray
- C.
Yellow
- D.
Green
Correct Answer
B. GrayExplanation
An antiglycolotic agent is found in gray tubes.Rate this question:
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- 21.
Sodium fluoride preserves glucose for ___ days.
- A.
2
- B.
3
- C.
1
- D.
4
Correct Answer
B. 3Explanation
Sodium fluoride preserves glucose for 3 days.Rate this question:
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- 22.
A gray tube should be inverted __ times.
- A.
3-4
- B.
8
- C.
2
- D.
0
Correct Answer
B. 8Explanation
A gray tube should be inverted 8 times. This means that the tube needs to be turned upside down and then returned to its original position a total of 8 times.Rate this question:
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- 23.
GTT is done with a _____ tube.
- A.
Red
- B.
Light blue
- C.
Gray
- D.
Green
Correct Answer
C. GrayExplanation
GTT stands for Gastric Tube Test, which is a procedure used to determine the presence of blood in the stomach. The color of the tube used for this test is gray.Rate this question:
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- 24.
A ___ tube is used for a lactic acid measurement.
- A.
Gray
- B.
Green
- C.
Red
- D.
Yello
Correct Answer
A. GrayExplanation
A gray tube is used for a lactic acid measurement. The color of the tube indicates the type of additive or anticoagulant present in the tube. Gray tubes typically contain sodium fluoride and potassium oxalate, which are used to preserve blood samples for lactic acid measurement. These additives help inhibit the breakdown of glucose and prevent glycolysis, which can affect the accuracy of lactic acid measurement. Therefore, a gray tube is the correct choice for this specific measurement.Rate this question:
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- 25.
Alcohol levels are measured using a ______ tube.
- A.
Red
- B.
Gray
- C.
Green
- D.
Lavender
Correct Answer
B. GrayExplanation
Alcohol levels are commonly measured using a gray tube. The color of the tube is important because it indicates the specific type of test being conducted. Gray tubes are typically used for tests that measure blood alcohol content (BAC) levels. The gray color of the tube is specifically designed to prevent light from entering, which helps to preserve the integrity of the sample and ensure accurate results. Other colors, such as red, green, or lavender, are not typically associated with alcohol level measurement.Rate this question:
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- 26.
A red/gray tube is also called
- A.
Cougar top
- B.
Striped top
- C.
Serum separator
- D.
Plasma separator
Correct Answer
C. Serum separatorExplanation
A red/gray tube is also called a serum separator because it is specifically designed to separate the serum from the blood sample. The tube contains a gel or clot activator that helps in the separation process. After the blood is drawn into the tube, it is centrifuged, causing the gel to form a barrier between the serum and the other components of the blood. This allows for easy and efficient extraction of the serum for various diagnostic tests.Rate this question:
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- 27.
Red/Gray tubes contain a
- A.
Anticoagulant
- B.
Clot activator
- C.
Antiglycotic
Correct Answer
B. Clot activatorExplanation
The correct answer is clot activator. Red/Gray tubes are commonly used in blood collection for serum separation. The red color indicates the presence of a clot activator, which promotes the coagulation process and helps in separating the serum from the blood cells. This clot activator enhances the formation of a blood clot, allowing for easier separation of the serum.Rate this question:
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- 28.
Tiger top tubes should be inverted ___ times.
- A.
8
- B.
3-4
- C.
5
- D.
0
Correct Answer
C. 5Explanation
Tiger top tubes should be inverted 5 times. Inverting the tube ensures proper mixing of the blood with the additives present in the tube, which helps in preventing clotting and ensuring accurate test results. Inverting the tube multiple times ensures thorough mixing, which is particularly important for tests that require anticoagulated blood samples.Rate this question:
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- 29.
Tiger top tubes are used for ___ tests.
- A.
Chemistry
- B.
Serology
- C.
Hematocrit
- D.
Glucose
Correct Answer
A. ChemistryExplanation
Tiger top tubes are used for chemistry tests because they contain a gel separator and clot activator. The gel separator helps in separating the serum from the blood cells, allowing for accurate analysis of various chemical components in the blood. The clot activator promotes the clotting of blood, which further aids in separating the serum. Therefore, tiger top tubes are specifically designed for chemistry tests to ensure precise results.Rate this question:
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- 30.
Red top tubes should be inverted ___ times.
- A.
0
- B.
3-4
- C.
5
- D.
8
Correct Answer
A. 0Explanation
Red top tubes should be inverted 0 times because they contain a clot activator or gel separator. Inverting the tube can cause clotting or disruption of the gel barrier, which can lead to inaccurate test results. Therefore, it is important to follow the specific instructions for each type of blood collection tube to ensure accurate and reliable laboratory testing.Rate this question:
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- 31.
This tube is normally used for the Blood Bank Dept.
- A.
Pink
- B.
Light blue
- C.
Green
- D.
Lavender
Correct Answer
A. PinkExplanation
The pink tube is normally used for the Blood Bank Dept. This suggests that the pink tube is specifically designed for collecting and storing blood samples in the blood bank.Rate this question:
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- 32.
Serum chemistry tests are performed with a ___ tube.
- A.
Yellow
- B.
Light blue
- C.
Red
- D.
Lavender
Correct Answer
C. RedExplanation
Serum chemistry tests are performed with a red tube because it contains a clot activator and a gel separator. The clot activator helps in the clotting process, allowing the separation of serum from the blood cells. The gel separator helps in the subsequent separation of serum from the clot. This tube is specifically designed for serum chemistry tests, ensuring accurate and reliable results.Rate this question:
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- 33.
What additive does a red top tube contain?
- A.
Heparin
- B.
EDTA
- C.
None
- D.
Sodium Citrate
Correct Answer
C. NoneExplanation
A red top tube does not contain any additive. Red top tubes are used for collecting serum samples, which do not require any additive for testing. The absence of an additive in the red top tube ensures that the sample remains in its natural state without any interference from anticoagulants or preservatives.Rate this question:
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- 34.
The sterile tube is what color?
- A.
Red
- B.
Light blue
- C.
Yellow
- D.
Lavender
Correct Answer
C. YellowExplanation
The sterile tube is yellow because it is a standard color used to indicate that the tube is sterile. Yellow is commonly associated with sterility in medical settings, and it helps healthcare professionals easily identify and differentiate sterile tubes from other types of tubes.Rate this question:
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- 35.
SPS is a
- A.
Anticoagulant
- B.
Clot activator
- C.
Serum activator
- D.
Serum separator
Correct Answer
A. AnticoagulantExplanation
SPS stands for Sodium Polyanethol Sulfonate, which is commonly used as an anticoagulant in blood collection tubes. It prevents blood from clotting by binding to calcium ions, which are necessary for the coagulation process. This allows the blood to remain in a liquid state and prevents the formation of clots. Therefore, the correct answer is anticoagulant.Rate this question:
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- 36.
SPS is found in a ___ tube.
- A.
Yellow
- B.
Light blue
- C.
Lavender
- D.
Green
Correct Answer
A. YellowExplanation
SPS is found in a yellow tube.Rate this question:
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- 37.
A yellow tube should be inverted ___ times.
- A.
0
- B.
3-4
- C.
5
- D.
8
Correct Answer
D. 8Explanation
The correct answer is 8. This means that a yellow tube should be inverted 8 times.Rate this question:
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- 38.
Blood culture tubes are
- A.
Yellow
- B.
Red
- C.
Green
- D.
Lavender
Correct Answer
A. YellowExplanation
Blood culture tubes are yellow because they contain a gel that acts as a separator between the liquid and cellular components of the blood. This gel helps to prevent contamination and allows for easier extraction of the liquid portion for testing. The yellow color also helps to distinguish these tubes from other types of blood collection tubes, making it easier for healthcare professionals to identify and use them correctly.Rate this question:
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- 39.
Whole blood is the most common specimen analyzed and usually collected in a ____ tube.
- A.
Red
- B.
Lavender
- C.
Green
- D.
Light blue
Correct Answer
B. LavenderExplanation
Whole blood is the most common specimen analyzed and usually collected in a lavender tube. The lavender tube contains an anticoagulant called ethylenediaminetetraacetic acid (EDTA), which prevents blood from clotting by binding calcium ions. This allows for accurate analysis of blood components such as red and white blood cells, as well as platelets. The lavender tube is commonly used for complete blood counts (CBC), blood typing, and other hematological tests.Rate this question:
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- 40.
What section of the lab studies a CBC?
- A.
Chemistry
- B.
Hematology
- C.
Microbiology
- D.
Serology
Correct Answer
B. HematologyExplanation
Hematology is the section of the lab that studies a CBC, which stands for complete blood count. A CBC is a common blood test that provides information about the different types of cells in the blood, such as red blood cells, white blood cells, and platelets. Hematology focuses on the study of blood and blood disorders, making it the appropriate section for analyzing and interpreting CBC results.Rate this question:
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- 41.
The most automated section in the laboratory is
- A.
Hematology
- B.
Chemistry
- C.
Serology
- D.
Microbiology
Correct Answer
B. ChemistryExplanation
Chemistry is the most automated section in the laboratory because it involves the analysis of chemicals and substances in body fluids and tissues. This requires the use of automated instruments and machines to accurately measure and analyze various components such as electrolytes, enzymes, hormones, and drugs. These automated systems not only improve efficiency and accuracy but also allow for a higher volume of samples to be processed in a shorter amount of time. Therefore, chemistry is the section in the laboratory that heavily relies on automation for its operations.Rate this question:
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- 42.
ALP, ALT, ASG and GGT are part of a ____ profile.
- A.
Coronary
- B.
Liver
- C.
Vascular
- D.
Toxicology
Correct Answer
B. LiverExplanation
ALP, ALT, ASG, and GGT are all liver enzymes. These enzymes are commonly measured in a liver function test to assess the health and functioning of the liver. Therefore, these enzymes are part of a liver profile.Rate this question:
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- 43.
Serology section is also called
- A.
Immunology
- B.
Hematology
- C.
Toxicology
- D.
Immunochemistry
Correct Answer
A. ImmunologyExplanation
The correct answer is immunology because serology is the study of blood serum and its components, specifically antibodies and antigens. Immunology is the branch of science that deals with the immune system, including the study of antibodies and antigens. Therefore, serology section is also called immunology.Rate this question:
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- 44.
The serology section evaluates
- A.
Bleeding time
- B.
Immunity
- C.
Glucose tolerance
- D.
Alcohol presence
Correct Answer
B. ImmunityExplanation
The serology section evaluates immunity. Serology is the study of blood serum and it involves the testing of blood samples to detect the presence of antibodies. Antibodies are proteins produced by the immune system in response to the presence of foreign substances, such as viruses or bacteria. By evaluating immunity through serology, healthcare professionals can determine if a person has been exposed to a specific pathogen or if they have developed immunity through vaccination. This information is crucial in diagnosing and managing infectious diseases.Rate this question:
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- 45.
The primary test performed in the microbiology section is
- A.
ALP
- B.
BT
- C.
OGTT
- D.
C&S
Correct Answer
D. C&SExplanation
The primary test performed in the microbiology section is C&S, which stands for Culture and Sensitivity. This test is used to identify the presence of bacteria or other microorganisms in a sample, such as blood or urine. It involves culturing the sample in a laboratory setting and then testing the cultured organisms against different antibiotics to determine their susceptibility or resistance. This information is crucial in guiding appropriate antibiotic treatment for infections.Rate this question:
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- 46.
A common test for diagnosis the cause of FUO is
- A.
C&S
- B.
SPS
- C.
CBC
- D.
ESR
Correct Answer
A. C&SExplanation
C&S stands for Culture and Sensitivity, which is a common test used to diagnose the cause of Fever of Unknown Origin (FUO). This test involves collecting a sample of bodily fluid, such as blood or urine, and culturing it in a laboratory to identify any bacteria or fungi that may be causing the fever. Sensitivity testing is then performed to determine which antibiotics or antifungal drugs would be most effective in treating the infection. Therefore, C&S is a relevant and appropriate test for diagnosing the cause of FUO.Rate this question:
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- 47.
The lab section that performs tests detecting UTI is
- A.
Urinalysis
- B.
Urology
- C.
Microbiology
- D.
Serology
Correct Answer
A. UrinalysisExplanation
Urinalysis is the correct answer because it is a laboratory section that focuses on analyzing urine samples. Urinalysis tests are commonly used to detect urinary tract infections (UTIs) by examining the physical, chemical, and microscopic properties of the urine. This includes looking for the presence of bacteria, white blood cells, and other indicators of infection. The other options, urology, microbiology, and serology, are not specifically dedicated to UTI detection through urine analysis.Rate this question:
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- 48.
Chemical examination in the urinalysis dept. determine
- A.
Specific gravity
- B.
Ph
- C.
Yeast
- D.
Parasites
Correct Answer
B. PhExplanation
The correct answer is "ph." The chemical examination in the urinalysis department determines the pH level of the urine. pH is a measure of the acidity or alkalinity of a solution. In the context of urinalysis, pH can provide important information about the functioning of the kidneys and the body's acid-base balance. Normal urine pH ranges from 4.6 to 8.0, with a slightly acidic to slightly alkaline pH being preferred. Abnormal pH levels may indicate urinary tract infections, kidney stones, or other underlying health conditions.Rate this question:
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- 49.
Microscopic examination of urine determines
- A.
Specific gravity
- B.
Glucose
- C.
Parasites
- D.
Protein
Correct Answer
C. Parasites -
- 50.
A physical examination in the urinalysis dept. evaluates
- A.
Ph
- B.
Color and clarity
- C.
Leukocytes
- D.
Protein
Correct Answer
B. Color and clarityExplanation
A physical examination in the urinalysis department evaluates the color and clarity of the urine. This is because the color and clarity of urine can provide important information about a person's health. The color of urine can indicate hydration levels, the presence of certain medications or substances, or the presence of certain medical conditions. The clarity of urine can indicate the presence of bacteria, blood, or other substances that may be a sign of infection or other health issues. Therefore, evaluating the color and clarity of urine is an important part of a physical examination in the urinalysis department.Rate this question:
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Mar 22, 2023Quiz Edited by
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Oct 02, 2011Quiz Created by
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