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Hemoglobin A1c

Order Code CH150
Turnaround Time 24 hours
Test Includes


Specimen Requirements
Specimen Source
Whole Blood
Transport Container
(Specimen Container)

Lavender (K2-EDTA)

Preferred Specimens
Minimum Volume (uL)
3.6 uL
Collection Instructions
(Transport Temperature)
Transport Refrigerated (cold packs)
Specimen Stability
Temperature Period
Room temperature 8 hours
Refrigerated 7 days
Frozen If testing is delayed more than 7 days, store at -70°C or colder.
Test Details
Clinical Significance

The Alinity c Hemoglobin A1c assay is used in clinical laboratories for the quantitative in vitro measurement of percent hemoglobin A1c (NGSP) or HbA1c fraction mmol/mol (IFCC) in human whole blood and hemolysate on the Alinity c analyzer. Hemoglobin A1c measurements are used as an aid in the diagnosis of diabetes mellitus, as an aid to identify patients who may be at risk for developing diabetes mellitus, and for the monitoring of long-term blood glucose control in individuals with diabetes mellitus. HbA1c is the fraction of hemoglobin A that is first reversibly, then irreversibly glycated at one or both N-terminal valines of the β-chain.1 The longer red blood cells are in circulation and the higher the ambient glucose levels, the higher the concentration of HbA1c. HbA1c reflects the average blood glucose level during the preceding 2 to 3 months. The HbA1c assay is useful as an aid in the: diagnosis of diabetes mellitus, identification of patients at risk for developing diabetes, and monitoring of patients with diabetes mellitus.

For monitoring diabetic patients, it is recommended that glycemic goals are individualized following current professional society recommendations. As recommended by the American Diabetes Association (ADA), patients in the range of 5.7 to 6.4 %HbA1c (39 to 46 mmol/mol) would be in the category of increased risk for diabetes and results ≥ 6.5% (48 mmol/mol) may aid in the diagnosis of diabetes. Several studies, including the Diabetes Control and Complications Trial (DCCT), have shown that long-term control of diabetes can prevent complications such as cardiovascular disease, retinopathy, nephropathy, and neuropathy. Measurement of HbA1c can be invaluable in the monitoring of glycemic control of diabetic patients.

Reference Ranges


Alternative Names