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AMCA Phlebotomy Exam

Test Tubes, Additives and Tests

QuestionAnswer
What are YELLOW tubes used for? Blood culture and sterile specimens
What are BLUE tubes used for? Coagulation tests (PT, PTT, fibrinogen)
What are RED tubes used for? Serum determinations in chemistry testing and blood bank testing.
What are GREEN tubes used for? Routine chemistry testing
What are LAVENDER tubes used for? Hematology testing (CBC, reticulocyte count, erythrocyte sedimentation).
What are GRAY tubes 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
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 and Potassium Oxalate
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
What color tube is used for DNA testing? Yellow
Tests done in the blood bank require what color tube? Red or Lavender or Pink
What is the CLSI Order of Draw? 1. Yellow - Sterile 2. Light Blue top-Coagulation 3. Red - Serum 4. Red Tiger Top - SST 5. Light Green - Lithium Heparin 6. Dark Green - Sodium Heparin 7. Lavender - EDTA 8. Gray - Glycolytic inhibitor
A urine C & S is typically ordered to detect what? U.T.I.
What hormone is detected in a positive urine pregnancy test? HCG
Which test might require 'chain of custody?' Drug Test
Which color tube is used for lead testing? Tan
Created by: kbaylor
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