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HelpTest Code GLYCO Hemoglobin A1C, LAB90
Performing Laboratory
St. Luke's Hospital Cedar Rapids
Specimen Requirements
Container/Tube:
Preferred: Lavender-top (EDTA) tube
Specimen Volume: 1 mL of EDTA whole blood, minimum 200 uL
Stability: Specimens may be stored up to 7 days at 2-8°C or 3 days at 15-25°C.
Reference Values
HEMOGLOBIN A1C
4.2-5.6%: Normal HbA1c
5.7-6.4%: Increased risk for diabetes
≥ 6.5%: Diagnostic for diabetes
ESTIMATED AVERAGE GLUCOSE
No established reference values
Day(s) Test Set Up
Sunday through Friday
Useful For
Hemoglobin A1C is useful in measuring the blood glucose regulation of patients with diabetis mellitus over a period of time.
Methodology
Capillary zone electrophoresis
Estimated average glucose = 28.7 x A1c - 46.7
Test Classification and CPT Coding
83036
Report Available
Testing performed Sunday - Friday
Approximate hours 8AM-8PM