At Quest, Hemoglobin (Hb) A1c is drawn in a EDTA (lavender-top) tube, order code 496.
Quest collection requirements
Hemoglobin (Hb) A1c tube and order code at Quest
Quest verified by: Mandi Boss B Franklin, Jul 4, 2026
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No login · Zero PHI · Clinician-verified · Quest + LabCorp + BioReference.