Hemoglobin A1c

Alternative Names/Synonyms	Glycated Hemoglobin, Glycohemoglobin, HbA1C
Laboratory	Core Laboratory & Transfusion Medicine
Sub-section	Biochemistry
Specimen Type	Blood
Test Code	HA1G

Clinical Significance

Identfying patients at risk for diabetes mellitus as well as aiding in the diagnosis and monitoring of individuals with diabetes mellitus.

Specimen Requirements (Sample Type)

Whole Blood

Specimen Requirements (Volume (mL))

0.5 mL

Specimen Requirements (Tube Type)

Whole Blood (Lavender EDTA Tube)
Collection Containers – Tube Types

Collection Requirements

Blood Collection Instructions

Sample Stability

Room Temperature: 3 days

Fridge: 7 days @ 2-8°C

Freezer: 6 months @ -20°C

Cause for Rejection

Specimen Acceptability and Transport Guidance

Instrument, Methodology

Roche cobas c 502, immunoassay

Test Availability

24 hours a day, 7 days a week

STAT Turnaround Time

1 hour

Routine Turnaround Time

3 hours

Reference Ranges

0.048 - 0.059

In case of discrepancies, always interpret results using reference ranges as stated on laboratory reports and/or electronic patient chart.

Laboratory Contact Information

416-586-4800 extension 4688