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Test Code LAB90 Hemoglobin A1C

Additional Codes

48202

Reporting Title

Hemoglobin A1C

Estimated Average glucose (eAG)

Methodology

Roche Turbidimetric Inhibition Immunoassay  RMH, GMC, and DH

Siemens Diagnostics  HMH, OBH and MGH

Useful in monitoring therapeutic goals for glycemic control.

Performing Laboratory

OhioHealth Laboratory Services-RMH, GMC, DH, HMH, MGH, OBH Core Laboratories

Specimen Requirements

Draw blood in a lavender-top (EDTA) tube(s) and send EDTA whole blood.  Mix by gently inverting 8 times. Forward unprocessed whole blood   

Specimen Stability Information

Specimen Type Temperature Time
Whole Blood Refrigerated 7 days
  Ambient  3 days
  Frozen  6 months

 

Day(s) Test Set Up

Monday through Sunday; Continuously

Reference Values

Please note: Reference intervals were changed as of 2/7/2019 to align with current American Diabetes Association guidline.

Sites using the Roche Chemistry Platform -RMH, GMC, DH,

Normal:  4.2% - 5.6%

Increased risk for diabetes:  5.7% - 6.4%

Diabetes:  ≥ 6.5%

Pediatrics:  No established reference range

Estimated average glucose:  74-114 mg/dL

  Sites using the Siemens Vista Platform- HMH and MGH

Normal:  4.0% - 5.6%

Increased risk for diabetes:  5.7% - 6.4%

Diabetes:  ≥ 6.5%

Pediatrics:  No established reference range

Estimated average glucose:  68-114 mg/dL                      

Test Classification and CPT Coding

83036