what color tube for hemoglobin a1c
Asked by: LabTechLarry
The Hemoglobin A1C (HbA1c) test typically uses a lavender-top tube (also known as a purple-top tube). This tube contains EDTA (ethylenediaminetetraacetic acid), which is an anticoagulant that prevents blood clotting and preserves the sample for accurate A1C measurement.
Always confirm with your lab or healthcare provider, as specific requirements may vary.