Hemoglobin A1C
| Label Mnemonic: | A1C |
| Epic code: | LAB90 |
| Downtime form: | A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery |
Chemistry
6240 RCP
356-3527
6240 RCP
356-3527
Specimen(s):
Whole Blood
Collection Medium:
 |
| Lavender top tube 3 mL (EDTA) |
Alternate
Collection Media:
Call laboratory for additional acceptable specimen collection containers.
Minimum:
3 mL; lavender top or TWO full lavender Microtainer®
devices for pediatrics
Testing Schedule:
24 hrs/day, 7 days a week, including holidays.
Turn Around
Time:
1 hour (upon receipt in laboratory)
Reference Range:
<5.7%
Hemoglobin A1c values of 5.7-6.4% indicate an increased risk for developing diabetes mellitus and are considered prediabetes. The healthcare team should counsel patients accordingly. In patients with diabetes, HbA1c goals should be discussed with the healthcare team.
Hemoglobin A1c values of 6.5% or greater are diagnostic of diabetes mellitus. In patients with diabetes, HbA1c goals should be discussed with the healthcare team.
Interpretive information based on Diagnosis and Classification of Diabetes Mellitus, American Diabetes Association (1).
Hemoglobin A1c values of 5.7-6.4% indicate an increased risk for developing diabetes mellitus and are considered prediabetes. The healthcare team should counsel patients accordingly. In patients with diabetes, HbA1c goals should be discussed with the healthcare team.
Hemoglobin A1c values of 6.5% or greater are diagnostic of diabetes mellitus. In patients with diabetes, HbA1c goals should be discussed with the healthcare team.
Interpretive information based on Diagnosis and Classification of Diabetes Mellitus, American Diabetes Association (1).
Comments:
Refer to BD Microtainer® Tubes product sheet for detailed sample collection instructions.
This test is also performed in the Iowa River Landing (IRL) clinical laboratory (for specimens drawn at that site).
This test is also performed in the Iowa River Landing (IRL) clinical laboratory (for specimens drawn at that site).
Test
Limitations:
Rheumatoid factor less than 750 IU/mL and ascorbic acid less than
50 mg/dL do not interfere.
In hemolytic anemia and iron deficiency anemia, the average age of
erythrocytes is altered. Caution should be used when interpreting the
HbA1c results from patients with these conditions (2).
References:
(1) American Diabetes Association, Classification and Diagnosis of
Diabetes: Standards of Medical Care in Diabetes. Diabetes Care.
2018; Jan;41:S1
(2) National Academy of Clinical Biochemistry. Hb A1c. In: Sacks DB,
ed. Guidelines and Recommendations for Laboratory Analysis in
the Diagnosis and Management of Diabetes Mellitus [Online]; 2011;
Chap 9.Methodology:
Turbidimetric Immuno inhibition
CPT Code:
83036