What is the correct order of draw when collecting blood samples?

The correct order of draw when collecting blood samples is essential for ensuring accurate laboratory test results. This order minimizes the risk of contamination and ensures the integrity of the samples.

In option B, the order begins with Yellow, which is used for blood cultures and sensitivity tests that require sterile collection. Moving on to Light Blue, this tube is important for coagulation studies and must be filled to the correct volume to maintain its accuracy. Next is Red, which is often used for serology tests and blood bank samples. This is followed by Gold, which is a serum separator tube (SST) used for various serological tests. Green comes next and is used for tests that require heparin, such as certain chemistry tests. Lavender, containing EDTA, is typically utilized for hematology tests, and finally, Gray is used for glucose and lactate testing.

This sequence ensures that each tube type is filled correctly without carryover from additives that could interfere with test results, thereby supporting the reliability of the tests performed.