what color tube for hga1c

The Hemoglobin A1C (HbA1c) test typically uses a lavender-top (purple-top) tube, which contains EDTA (ethylenediaminetetraacetic acid) as an anticoagulant. This tube is used because EDTA helps preserve the integrity of red blood cells, ensuring accurate measurement of glycated hemoglobin.

• Tube Color: Lavender/Purple
• Anticoagulant: EDTA

Always confirm with your lab or healthcare provider, as protocols may vary slightly depending on the laboratory.