Phlebotomy Tube Color and Order Guide Quiz

The order of blood collecting tubes is important to ensure accurate laboratory results. The correct order is Red, Light Blue, Gold, Green, Lavender, Gray, based on the additives and tests each tube is designed for.

The Red/Black (tiger top) TubeGold (YELLOW)Red/Gold tube is commonly used for chemistry tests as it contains both clot activator and gel separator which aid in serum separation.

Pink tubes in a laboratory setting are typically used for EDTA anticoagulated blood samples, which are processed in the Blood Bank department for tests like type and cross match. The inversion count refers to the number of times a tube must be inverted to properly mix the blood with the anticoagulant.

The Gray Tube is primarily used for preserving glucose, renal, diabetic screen, and alcohol level tests, as well as for determining the inversion count which is typically in the range of 8-10.

The Royal Blue Tube is used for trace elements, toxicology and nutritional-chemistry determinations, not for departmental tests like hematology or cardiovascular tests. The correct additives are None, EDTA, and Sodium heparin, not Sodium heparin.

Yellow Tube is commonly used in laboratory testing for microbiology and Blood bank / Immunohematology purposes, not for urine analysis, bone density testing, or genetic testing.

Different color tubes are used for different departments and contain specific anticoagulants or additives to preserve blood for specific tests. Lavender tubes, for example, are used in hematology because they contain EDTA as an anticoagulant.

For coagulation testing, sodium citrate tubes with light-blue stoppers are used as they yield plasma for analysis.

The correct answer explains the color coding system for tubes used in medical laboratories for chemistry tests on plasma.

The light blue tube is specifically used for coagulation testing and contains sodium citrate as an additive to prevent blood clotting during testing. The incorrect answers provided do not align with the specific purpose of the light blue tube in blood collection.

The Red Tube is commonly used in laboratory testing for various purposes such as separating serum, collecting samples for chemistry tests, serology, and immunology testing, and counting inversions to ensure proper mixing of additives.

The purpose of a Red/light gray Clear Tube is to serve as a discard tube, not for common tests such as hormones, not for keeping track of inversion counts, and not for use in hematology departments.

The correct answer is option 1 because Lithium heparin and gel for plasma separator tubes are commonly used for plasma collection in Chemistry department for various tests. The other options are used for different purposes such as coagulation studies (option 2 - Sodium citrate tube), serum biochemistry (option 3 - Serum separator tube), and whole blood analysis (option 4 - EDTA tube).

The Green Tube in a lab setting is typically used for chemistry tests and contains additives such as Lithium heparin, Sodium heparin, or Ammonium heparin. The incorrect answers provided do not align with the usual purpose and contents of a Green Tube in a lab setting.

The lavender (purple) tube typically contains EDTA as the additive for blood collection, which is used in hematology for common tests such as CBC, ESR, and Hgb/Hct. The inversion count for lavender tubes is usually 8-10 times.

The correct answer explains the specific anticoagulants represented by the letters E, C, H, and O, making it the appropriate choice in the context of anticoagulation in medical settings.

Each incorrect answer contains a different action that heparin does not inhibit.