GlycoMark® and Hb A1c

Casandra

Casandra Test Code LC34510Version 1 (DRAFT)

Performing Lab

Lab LabcorpLab Test ID 502226CPT Codes 83036, 84378

GlycoMark® and Hb A1c

Also known as: Hb A1c and 1-5 Anhydroglucitol

Clinical Use

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Use

GlycoMark® testing provides an estimate of the patient's postmeal glucose during a one- to two-week period, making it ideal for intermediate term monitoring of glycemic control in diabetic patients. GlycoMark® testing can also help to monitor the effectiveness of therapeutics targeting postprandial glucose (PPG),1,2 and is a useful adjunct to routine A1c testing, because it responds more rapidly and sensitively to hyperglycemia than A1c.1,2

Special Instructions

As with all diagnostic tests, GlycoMark® results should be interpreted along with clinical findings and results from other diagnostic methods. Serum or plasma must be separated from cells within 45 minutes of venipuncture. Send serum or plasma in a plastic transport tube.

Limitations

Individuals using INVOKANA® or other SGLT2 inhibitors may show low levels of 1,5-AG due to interference with renal reabsorption. Persistently positive urinary glucose levels, pregnancy, renal failure, and other conditions can affect 1,5-AG values. Values may rise with certain Chinese medicines or during intravenous hyperalimentation and decrease under steroid therapy.

Test Details