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HelpTest Code 18109 Glycosylated Hemoglobin (Hgb A1C)
Purpose
Evaluating the long-term control of blood glucose concentrations in patients with diabetes.
Diagnosing diabetes and identifying patients at increased risk for diabetes (prediabetes).
Performing Laboratory
Copley Hospital
Methodology
Turbidimetric & Colorimetric
Specimen Requirements
Specimen Type: Whole Blood
Preferred: Lavender Top
Specimen Volume: Full Tube
Specimen Minimum Volume: 2 mL
Collection Instructions:
1. Label specimen with patient’s full name, date of birth,
date & time of collection and person collecting.
2. If delay in specimen transport > 1 hour, centrifuge tube.
3. Refrigerate specimen during transport.
Reference Values
Normal: 4.2 - 5.6 %
Stability
Refrigerated: 7 Days
Day(s) Performed
Daily
Available STAT
Analytical Time: 1 Day
Aliases
Glycosylated Hemoglobin (Hgb A1C)
Glycosylated Hemoglobin
Hemoglobin A1C
Hgb A1C
A1C
Test Classification and CPT Coding
83036