Laboratory Medicine

Test catalogue

Hemoglobin A1c
Test Name Hemoglobin A1c (HbA1c)
Specimen Type / Requirements Container Type = Lavender Minimum Venous Volume = 0.5 mL whole blood
Specimen Handling Collection Instructions: Collect sample in a lavender top and send to core lab. Sample should be well mixed at time of collection to prevent platelet clumping. Write your initials, date and time of collection on the collection label. Stability: Stable at room temperature for 1 day, refrigerated for 7 days, and frozen for 90 days. Transportation: Transport at room temperature within 1 hour of collection. Sample Rejection Criteria: Plasma, clotted sample, unlabeled or samples of non sufficient quantity.
Required Documentation
Turnaround Time (TAT) 24 Hours	Test Utilization Do not order HBA1C within 60 days from previous result.
Reference Value Diagnostic Cutoffs: Normal: < 6.0% Prediabetes: 6.0 - 6.4% Diabetes: ≥ 6.5% Glycemic Targets: Type I Diabetes, pediatric <= 7.5 % Type II Diabetes, all ages <= 7.0 %
Test Code LAB90	Methodology Turbidimetric inhibition immunoassay
Testing Location SMH-SJHC Biochemistry	Other Information Last Updated: June 22, 2026

Hemoglobin A1c

Test Name

Hemoglobin A1c (HbA1c)

Specimen Type / Requirements

Container Type = Lavender

Minimum Venous Volume = 0.5 mL whole blood

Specimen Handling

Collection Instructions: Collect sample in a lavender top and send to core lab. Sample should be well mixed at time of collection to prevent platelet clumping. Write your initials, date and time of collection on the collection label.

Stability: Stable at room temperature for 1 day, refrigerated for 7 days, and frozen for 90 days.

Transportation: Transport at room temperature within 1 hour of collection.

Sample Rejection Criteria: Plasma, clotted sample, unlabeled or samples of non sufficient quantity.

Required Documentation

Turnaround Time (TAT)

24 Hours

Test Utilization

Do not order HBA1C within 60 days from previous result.

Reference Value

Diagnostic Cutoffs:

Normal: < 6.0%

Prediabetes: 6.0 - 6.4%

Diabetes: ≥ 6.5%

Glycemic Targets:

Type I Diabetes, pediatric <= 7.5 %

Type II Diabetes, all ages <= 7.0 %

Test Code

LAB90

Methodology

Turbidimetric inhibition immunoassay

Testing Location

SMH-SJHC Biochemistry

Other Information

Last Updated: June 22, 2026