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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
EAG = 28.7 x HbA1c - 46.7
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