In microcollection tubes, lavender or pink tubes are collected in which position?

In microcollection tubes, lavender or pink tubes are collected in which position?

• A. Second
• B. First
• C. Third
• D. Last

Answer: (B)

Lavender and pink microcollection tubes contain EDTA, an anticoagulant that preserves blood cells and is commonly used for hematology and blood-bank testing. Collecting these first protects the integrity of the sample for these sensitive tests. If you wait and draw other tubes first, factors like tissue fluid contamination or different additives in later tubes could interfere with the EDTA specimen or cause carryover that alters results. By starting with the EDTA-containing tubes, you secure the most delicate portion of the sample before any potential contamination, and then proceed with the remaining tubes in the lab’s prescribed order.

Lavender and pink microcollection tubes contain EDTA, an anticoagulant that preserves blood cells and is commonly used for hematology and blood-bank testing. Collecting these first protects the integrity of the sample for these sensitive tests. If you wait and draw other tubes first, factors like tissue fluid contamination or different additives in later tubes could interfere with the EDTA specimen or cause carryover that alters results. By starting with the EDTA-containing tubes, you secure the most delicate portion of the sample before any potential contamination, and then proceed with the remaining tubes in the lab’s prescribed order.