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Test Code
HA1CG
Test Name
Hemoglobin A1c with eAG
CPT Codes
83036
Included Tests
  • Hemoglobin A1c
  • Estimated Average Glucose (eAG)
Expected Turnaround Time
1 day
Clinical Utility
The Hemoglobin A1c assay, expressed as the percent of hemoglobin that is glycated, measures chronic glycemia and is widely used to judge the adequacy of diabetes treatment and adjust therapy. Day-to-day management is guided by self monitoring of capillary glucose concentrations, expressed in units consistent with venous glucose measurements (mg/dL).
Specimen and Container Info

Specimen Type: Whole Blood

Preferred Collection Container: Lavender Top (EDTA)  

Minimum Acceptable Volume: 0.4 mL
Processing and Submission Instructions

Tubes with anticoagulant: To ensure accurate test results, all tubes containing an anticoagulant or preservative must be allowed to fill completely. Attempts to force more blood into the tube by exerting pressure, as in collection with a syringe, will result in damage to the red cells (hemolysis).
Transport Instructions

Transport to the laboratory refrigerated.
Stability Requirements

Room Temperature

8 hours

Refrigerated

7 days

Frozen

1 month

Freeze/Thaw Cycles

Thaw only once
Causes for Rejection

Samples with large/visible clots.
Methodology
Colorimetric And Turbidometric Immunoinhibition
Reference Intervals

Non-diabetic <5.7

Pre-diabetic 5.7-6.4

Diabetic >=6.5

ADA target for diabetic control <=7

Note: HA1C results <4 may be suggestive of increased red cell turnover.
Performing Location
Roble Road Core Laboratory
Testing Schedule
Routine, daily
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
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