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Hemoglobin A1c
Test CodeHGBA1C
Alias/See Also
Performed at Sonora Quest Laboratoies, test code 9230
Performed on site for BCCH, WMC, TCH, PCMH, OCH, BLMC and WyMCC
Performed on site for BCCH, WMC, TCH, PCMH, OCH, BLMC and WyMCC
CPT Codes
83036
Preferred Specimen
5 mL purple for facilities performing on site
Instructions
For facilities sending to Sonora Quest Laboratories, see link below for specimen details, methodology, setup schedule and reference ranges.
The American Diabetes Association recommends A1C testing every 3 months. For patients who are under good control and not changing their therapy, an A1C every 6 months may be acceptable.
The American Diabetes Association recommends A1C testing every 3 months. For patients who are under good control and not changing their therapy, an A1C every 6 months may be acceptable.
Clinical Significance
The level of HgbA1c is proportional to the level of blood glucose over a period of approximately two
months. Thus, HgbA1c is accepted as an indicator of the mean of daily blood glucose concentration over
the preceding two months. Studies have shown that the clinical values obtained through regular
measurement of HgbA1c lead to changes in diabetes treatment and improvement of metabolic control
as indicated by a lowering of HgbA1c values.
The American Diabetes Association recommends measurement of HgbA1c levels two to four times per
year, less frequently with stable control.
months. Thus, HgbA1c is accepted as an indicator of the mean of daily blood glucose concentration over
the preceding two months. Studies have shown that the clinical values obtained through regular
measurement of HgbA1c lead to changes in diabetes treatment and improvement of metabolic control
as indicated by a lowering of HgbA1c values.
The American Diabetes Association recommends measurement of HgbA1c levels two to four times per
year, less frequently with stable control.
Additional Information
Hemoglobin A1c With eAG
