Question

What is the order of draw for capillary punctures?

Answer 1

The order of draw for capillary punctures is lithium heparin, EDTA, other additive tubes, and non-additive tubes.

Step-by-step explanation:

The order of draw for capillary punctures is as follows:

1. Lithium heparin: This tube is used for many blood chemistry tests and should be filled first.
2. EDTA: This tube is used for blood cell counts and should be filled after the lithium heparin tube.
3. Other additive tubes: Tubes containing other additives such as citrate, fluoride, or oxalate should be filled last, following the EDTA tube.
4. Non-additive tubes: Tubes that do not contain any additives should be filled last.

These tubes are used to collect and separate different components of blood for testing purposes. It is important to follow the correct order of draw to avoid cross-contamination and ensure accurate test results.