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Which tube would be used first for CBC, Chemistry panel, lead, and toxicology screen via capillary puncture?

A. Red top tube
B. Lavender top tube
C. Gray top tube
D. Green top tube

Answer :

Final answer:

For capillary puncture testing of CBC, Chemistry panel, Lead, and Toxicology screen, the tube order would start with the Green top tube containing Lithium Heparin followed by Lavender, Red and Gray top tubes.

Explanation:

The procedure of capillary puncture, specifically when testing for a Complete Blood Count (CBC), a Chemistry panel, Lead, and a toxicology screen, requires adherence to a particular order of collection to avoid contamination or dilution of samples. Therefore, the correct answer to your question, 'CBC, Chemistry panel, lead, and toxicology screen via capillary puncture, which tube would be first?' is (D) Green top tube. The Green top tube contains Lithium Heparin, which is an anticoagulant used to get plasma from blood samples. Plasma obtained from these tubes is used in clinical chemistry for various tests including Chemistry panels and toxicology screens. After that, the Lavender top tube for the CBC test, then the Red and Gray tubes are typically used.

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