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A portion of a well-mixed sample removed for testing is a(n): |
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aliquot |
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A term used to describe a blood sample in which the red blood cells have ruptured is: |
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hemolyzed |
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Which of the following is not a responsibility of the medical assistant to the clinical laboratory? |
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interrupting abnormal results and providing diagnosis to patients |
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Decreased hemoglobin levels are seen in which of the following illnesses? |
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both A and C: iron-deficiency and cirrhosis of the liver |
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______involves the study of bacteria, fungi, yeasts, parasites, and viruses. |
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Microbiology |
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The act passed by Congress to establish quality standards for all laboratory testing is referred to as: |
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CLIA |
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Categories of tests performed in the clinical laboratory are assigned by the FDA on the basis of the: |
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potential risk to public health |
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Laboratory tests performed in a physician's office are most likely to be categorized as: |
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both A and B: waived and moderate-complexity |
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Which of the following is not a waived test? |
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Gram staining |
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A blood culture and sensitivity (C&S) test is most likely performed in which division of the clinical laboratory? |
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Microbiology |
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You are preparing a chemical hygiene plan for your employer and need copies of the material safety data sheets (MSDS) for several products in use in your laboratory. The first step is to contact: |
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the manufacturer of the product |
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In the identification system of the National Fire Association,the white diamond indicates: |
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special hazards of the chemical |
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Which of the following is most likely to prevent the spread of infection in a laboratory? |
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washing your hands |
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The pledge of healthcare professionals to work to achieve the highest degree of excellence in the care given to every patient is otherwise known as: |
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quality assurance |
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The most common temperature for an incubator in the microbiology laboratory is: |
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37 degress C |
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You are required to transfer 10mL of urine from a 24-hour specimen into a special tube to be sent to a referral laboratory. You: |
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use a graduated cylinder to measure the urine, then pour it into the tube |
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Pipets used to prepare reagents include: |
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all of the above: serologic, graduated, volumetric |
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Which of the following is most accurate to measure 500mL? |
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500-mL volumetric flask |
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The ocular of the microscopic generally magnifies the image: |
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10 times |
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The microscopic component that directs the light up through the stage is the: |
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condenser |
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When the 40x objective is in place on the microscope, the total magnification of the specimen is: |
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400x |
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Immersion oil can be used with which of the following objective lenses of the microscope? |
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100x |
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A centrifuge is used to seperate: |
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all of the above: liquids from solids, blood cells from serum or plasma, crystals from urine |
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Balancing a centrifuge requires that all tubes in the load: |
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all of the above:have an equal amt of liquid of the same viscosity, are of equal size and shape, have a partner in that they are directly across from one another in the rotor holder |
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Preventing aerosolization in a centrifuge can be accomplished by ensuring that: |
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the tubes are tightly capped |
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An autoclave can best be compared with a(n): |
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pressure cooker |
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The word autoclaved appears on special tape used in an autoclave only if the temp has reached: |
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121 degrees C |
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A medical assistant instructs a pt to collect a 1st morning specimen for which of the following tests? |
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all of the above: pregnancy testing, culture for bacteriuria, quantitative protein determination |
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The recommended specimen for estradiol (a female hormone) testing on urine is most likely a ______ specimen. |
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24-hour |
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If a urine specimen cannot be analyzed within 2-hours, the best course of action is to: |
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refrigerate the specimen |
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You return from your lunch break to find that several specimens are waiting in the refigerator to be tested. One of the specimens has a thick layer of pinkish-colored fluffy sediment in the bottom. What might this sediment be? |
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precipitated amorphous urate crystals |
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Which of the following is mismatched concerning urine color and the likely pathologic cause? |
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reddish brown: diabetes |
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Urine with suspected high levels of which substance should be stored in a dark place before testing? |
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bilirubin |
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If you fail to refrigerate a urine sample for an extended period of time before testing, which of the following is likely to increase? |
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pH |
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When instructing a female pt for a clean-catch midstream urine specimen, how many antiseptic towelettes should you instruct her to use? |
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three |
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The normal volume of urine produced by an adult in a 24-hour period generally does not exceed: |
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2 L |
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The physical assessment of a urine sample reveals clear, pale, straw-colored urine with a sweet odor. What pathologic condition might this suggest? |
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diabetes mellitus |
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The specific gravity of a urine specimen reads 1.035. This value is considered to be: |
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abnormally high |
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You open a urine sample for testing and immediately detect a fruity odor. Which test do you expect to be elevated on chemical analysis? |
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ketones |
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On chemical analysis a urine specimen from a female with a urinary tract infection most likely reveals: |
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increased pH, increased nitrite, increased leukocyte esterase |
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One of the 1st detectable signs of renal disease is: |
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proteinuria |
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One of the 1st detectable signs of liver disease is: |
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bilirubinuria |
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Which of the following is always present in a small quantityin normal urine? |
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urobilinogen |
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A urine specimen is tested and shown to have a pH of 8.0. This value is: |
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normal |
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The cell most likely seen in normal specimen is: |
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squamous epithelial cell |
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In the microscopic observation of urine sediment, yeast most resemble: |
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red blood cells |
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Casts in the urine sediment are best observed with the: |
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10x objective with decreased illumination |
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A urine pregnancy test result is positive: |
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from implantation of the fertilized egg through delivery |
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Which of the following is a tubular structure found in urine and composed mainly of mucoprotein secreted by certain cells of the kidney? |
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casts |
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Urine from a child with a musty smell most likely has a diagnosis of: |
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PKU |
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______includes the physical, chemical, and microscopic examination of urine. |
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urinalysis |
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The clinical _______ department analyzes blood, cerebrospinal fluid (CSF), urine, and joint fluid. |
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chemistry |
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________is the single most important way to prevent the spread of infection. |
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handwashing |
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________on swabs, tubes, transport media, and other collection containers should be checked before these items are used. |
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expiration dates |
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The stepwise method used to collect, process, and test a specimen used as evidence in a legal case is termed ______ |
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chain of custody |
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An order found on a laboratory requisition indicating that the test mus be done immediately is ______. |
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STAT |
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_______ casts are not uncommon in the urine of athletes. |
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hyaline |
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A red blood cell seen in urine sediment that has scalloped, leaflike edges is termed ______. |
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crenated |
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The sugar most commonly found in urine is _______. |
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glucose |
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The pigment _______ is responsible for the color of urine. |
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urochrome |
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A random sample may contain blood from vaginal contamination if the woman is _______. |
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menstruating |
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When a woman enters menopause, the ovaries stop producing eggs and levels of ______ increase. |
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FSH |
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The most reliable test for detecting bladder cancer is a _______, but itis invasive. |
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cystoscopy |
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_______is the study of poisonous substances and their effects on the body. |
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toxicology |
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