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AMCA Phlebotomy Exam

Test Tubes, Additives and Tests

QuestionAnswer
What are YELLOW tubes used for? Blood culture and sterile specimens ACD solution
What are BLUE tubes used for? Commonly used for coagulation tests (PT, PTT, fibrinogen)
What are RED tubes used for? Commonly used for serum determinations in chemistry testing and blood bank testing.
What are GREEN tubes used for? Commonly used for routine chemistry testing
What are LAVENDER tubes used for? Commonly used for hematology testing (CBC, reticulocyte count, erythrocyte sedimentation).
What are GRAY tubes used for? Commonly used for glucose tolerance and lactic acid measurement.
What are ROYAL BLUE and TAN tubes used for? Used to collect samples for nutritional studies, therapeutic drug monitoring and toxicology. Also used for testing aluminum, copper, arsenic, calcium, etc. Tan topped is used for lead testing.
What is the additive in Yellow stopper tubes? Sodium Polyanetholesulfonate
What is the additive in Blue stopper tubes? Sodium Citrate
Which additive prevents coagulation by binding calcium? Sodium Citrate
Which color tube stopper does not require an additive? Red
What additive *can* (not required) be added to RED stopper tubes? Thixotropic gel can be added (this is an inert (nonreacting) synthetic substance contained in or near the bottom of certain blood collection tubes.
What is the additive in GREEN stopper tubes? Sodium heparin and lithium heparin - natural anticoagulants that inhibits thrombin.
What is the additive in LAVENDER stopper tubes? Ethylenediaminetetraacetic Acid (EDTA)
What does the additive Ethylenediaminetetraacetic Acid (EDTA) do? Binds the calcium needed for clot formation.
What is the additive in GRAY stopper tubes? Sodium fluoride- a preservative that inhibits glycolic action AND Potassium Oxalate - an anticoagulant that binds calcium.
What is the additive in TAN stopper tubes? EDTA - Ethylenediaminetetraacetic Acid
What is the correct order of draw when performing a venipuncture? 1. Blood Cultures 2. Light Blue top-tubes 3. Red or Speckled tubes 4. Green top tubes 5. Lavender top tubes 6. Gray top tubes
Created by: kbaylor
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