Frequently ordered tests, tube types for each test, fasting and timed collections, and effects of hemolysis, hemoconcentration, posture and diet on results.
40 cards · basic cards · AI-written, checked twice. Edit anything.
- Which tube top color is used for a CBC (complete blood count)?
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Lavender top- What anticoagulant is inside a lavender top tube?
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EDTA- What anticoagulant is inside a light blue top tube?
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Sodium citrate- Which tests are drawn in a light blue top tube?
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PT/INR and PTT (coagulation studies)- What is the correct blood-to-citrate ratio in a light blue top tube?
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9 parts blood to 1 part sodium citrate- Why does a short draw invalidate a coagulation test?
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It creates excess citrate relative to plasma volume, falsely prolonging clotting times- What does a gold or tiger top tube contain?
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A clot activator and a gel separator- What panel is commonly collected in a gold top (SST) tube?
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Comprehensive or basic metabolic panel (chemistry tests)- What anticoagulant is found in a green top tube?
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Heparin (lithium or sodium heparin)- Why is a green top tube preferred for STAT electrolyte or ammonia testing?
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It yields plasma quickly without waiting for clotting- What two additives are found in a gray top tube?
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Sodium fluoride and potassium oxalate- The gray top tube contains sodium fluoride, which preserves glucose by inhibiting ____.
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glycolysis- What is a royal blue (or dark blue) top tube used for?
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Trace element and toxicology testing- What tube is traditionally used for a Westergren ESR test?
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Black top tube (sodium citrate)- What is a plain red top tube (no gel, no additive) used for?
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Serum chemistry or serology testing
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