Hemoglobin A1c

Test Code

LAB90

Alias/See Also

Glycated Hemoglobin
Glycosylated Hgb
Glyco Hgb
Hgb A1C

CPT Codes
83036

Includes

Samples with a predominance of Hemoglobin S will reflex a Fructosamine order (Epic test code LAB1013)

Preferred Specimen

4.5 ml (2.0 ml minimum) EDTA (lavender) whole blood

Minimum Volume

2 ml (0.5 ml minimum) EDTA (lavender) whole blood

Instructions

Invert tube twenty times to adequately mix anticoagulant.

Transport Temperature

Room temperature/Ambient

Specimen Stability

Temperature	Time
Room temperature/Ambient	24 hours
Refrigerated	7 days
Frozen	7 days at -20°C 6 months at -70°C

Methodology
The Bio-Rad D100 Hemoglobin testing system utilizes ion-exchange high-Performance Liquid Chromatography (HPLC).

Setup Schedule

Mon-Sun

Reference Range

Non-diabetic: 4.3-6.1 %

Clinical Significance

Use to diagnose and monitor diabetes melitus. Monitor prediabetes. This assay is not useful in determining day-to-day glucose control.
For patients with know hemoglobin variants without hemoglobin A, the preferred test for monitoring long-term glycemic control is Fructosamine (LAB1013).

Performing Laboratory
Piedmont Athens Regional

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.