Hemoglobin A1c

Test Code

VA1C

Quest Code

496

Alias/See Also

HBG A1C(QUEST)

CPT Codes
83036

Preferred Specimen

1 mL whole blood collected in an EDTA (lavender-top) tube

Minimum Volume

1ML

Other Acceptable Specimens

NONE

Transport Container

EDTA LAVENDER

Transport Temperature

ROOM TEMPERATURE

Specimen Stability

ROOM TEMPERATURE 24 HRS REFRIGATED 14 DAYS

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Sodium fluoride/oxalate (gray-top) tubes • Heparinized plasma

Methodology
Ion-Exchange high performance liquid chromatography (HPLC)

FDA Status
APPROVED

Setup Schedule

Monday thru Friday 0700 to 1730

Report Available

within 24 to 48 hrs

Limitations

Specimens from patients with hemolytic anemias may exhibit decreased glycohemoglobin levels compared to patients with normal red cell life span. Specimens from patients with polycythemia or post spleectomy patients may exhibit increased glycohemoglobin levels.

Reference Range

4.0-6.0%

Clinical Significance

Hemoglobin A1C offers a more accurate indication of the patient's long term diabetic control over the last two or three months

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

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.