In the order of draw for skin puncture, which item is drawn second?

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Multiple Choice

In the order of draw for skin puncture, which item is drawn second?

In a finger-stick (skin puncture) collection, preparing a peripheral blood smear from fresh capillary blood is a priority because the smear quality depends on using freshly drawn blood with minimal tissue fluid contamination. Placing a drop of blood on a glass slide right away allows you to make a rapid, high-quality smear for microscopic examination before the sample is altered by clotting or interactions with additives. That’s why the slide comes in as the second item drawn: the first drop is used to prepare the smear promptly, and subsequent drops are collected into the appropriate tubes (such as EDTA microtainer or serum microtainer tubes) or routed to other tests with specific handling. The blood gas tube, which requires special handling, is not typically part of the routine capillary draw sequence.

In a finger-stick (skin puncture) collection, preparing a peripheral blood smear from fresh capillary blood is a priority because the smear quality depends on using freshly drawn blood with minimal tissue fluid contamination. Placing a drop of blood on a glass slide right away allows you to make a rapid, high-quality smear for microscopic examination before the sample is altered by clotting or interactions with additives.

That’s why the slide comes in as the second item drawn: the first drop is used to prepare the smear promptly, and subsequent drops are collected into the appropriate tubes (such as EDTA microtainer or serum microtainer tubes) or routed to other tests with specific handling. The blood gas tube, which requires special handling, is not typically part of the routine capillary draw sequence.

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