Clinics and Departments

Laboratory Services

Lab Dept:

Chemistry

Test Name:

Hemoglobin A1c

General Information

Lab Order Codes:

HA1C

Synonyms:

Glycated Hemoglobin, Glyco-Hgb; Hgb A1c

CPT Codes:

83036 – Hemoglobin; glycated

Test Includes:

Hemoglobin A1c concentration reported as a % of total hemoglobin.

Logistics

Test Indications:

The measurement of hemoglobin A1c concentration is recommended for monitoring the long-term care of diabetes. The level of Hgb A1c is proportional to the level of glucose in the blood over a period of approximately 2 months.

Lab Testing Sections:

Chemistry

Phone Numbers:

MIN Lab: 612-813-6280

STP Lab: 651-220-6550

Test Availability:

Daily, 24 hours

Turnaround Time:

1 – 3 days, test performed Monday – Friday.

Special Instructions:

N/A

Specimen

Specimen Type:

Whole blood

Container:

Lavender top (EDTA) tube or Clinitube (D956G-70-35) heparinized glass capillary tube

Draw Volume:

0.5 mL blood in EDTA tube or 0.035 mL blood in capillary tube

Processed Volume:

0.001 mL blood

Collection:

Routine venipuncture preferred

Alternate sample: capillary puncture

Special Processing:

Lab Staff: Do not centrifuge. Specimen should remain in original collection tube. Store at refrigerated temperatures.

Patient Preparation:

None

Sample Rejection:

Clotted specimen; mislabeled or unlabeled specimen; total Hgb <7 or >24 g/dL

Interpretive

Reference Range:

4.2 – 6.3%

Critical Values:

N/A

Limitations:

The patient’s total hemoglobin must be within the range of 7-24 g/dL for testing by this method.

Methodology:

Monoclonal Antibody

Contraindications:

Patients with >10% Hgb F will have lower than expected Hgb A1c results.

References:

Bayer DCA 2000 Hgb A1c Insert 5000GD Rev. 10/00



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