1,5-Anhydroglucitol (1,5-AG), Intermediate Glycemic Control

Test Code

HA1C15AGRFLX

Quest Code

10378

Alias/See Also

GLYCOMARK

CPT Codes
84378

Preferred Specimen

1 mL serum, received spun

Minimum Volume

0.5 mL

Other Acceptable Specimens

Plasma collected in: EDTA (lavender-top) tube

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 7 days
Refrigerated: 7 days
Frozen: 28 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Hemolysis • Anticoagulants other than EDTA • Unspun serum separator tubes

Methodology
Enzymatic

Setup Schedule

Set up: Sun, Tues, Thurs-Sat; Report available: 1-3 days

Reference Range

Age	Male (mcg/mL)	Female (mcg/mL)
≤1 year	Not established	Not established
2-17 years	15.0-38.0	11.2-35.7
≥18 years	7.3-36.6	7.5-28.4

Clinical Significance

Diazyme 1,5-anhydroglucitol (1,5-AG) Assay is an enzymatic method intended for the quantitative determination of 1,5-anhydroglucitol (1,5-AG) in serum or plasma. The 1,5-AG Assay is for the intermediate term (preceding 1-2 weeks) monitoring of glycemic control in people with diabetes.

Performing Laboratory

Quest Diagnostics Nichols Institute

14225 Newbrook Drive

Chantilly, VA 20153

Last Updated: August 22, 2023

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.