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Hemoglobin A1c (HbA1c or Glyco Hgb)


The HbA1c Advanced assay utilizes a series of reagents to measure hemoglobin A1c (A1c) concentration by a turbidimetric immuno-inhibition method.

Test Utility

This test is used to measure glucose control in patients with or suspected of having diabetes mellitus. It measures the mean daily glucose concentration of 2-3 months and is a better indicator of dietary and medicinal control than a single glucose reading.

Specimen Collection and Preparation

Whole blood sample in the following tubes:

  • Preferred specimen: 

       K2 EDTA

       K3 EDTA

  • Also acceptable: 

       Lithium Heparin (green top)

       Sodium Heparin (green top)

Specimen Storage and Stability

Store whole blood samples at the following temperatures:

  • Room temperature: 20°C to 25°C for no longer than 8 hours

  • Refrigerated: 2°C to 8°C for up to 7 days

  • Frozen: -20°C or lower for up to 1 month. Frozen samples should be thawed only once.

Specimen Rejection

  • Insufficient sample volume

  • Sample not stored at proper temperature

  • Specimen labeled incorrectly or not labeled

Reference Pages


Monday – Saturday

Result available within 24 hours of receipt in laboratory

NOTE: Specimens are refrigerated (2-8°) for 7 days before disposal


Vibra Health Laboratory

1307- A, Allen Dr

Troy, MI 48083

(248) 846-0663

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