GlycoMark® and Hb A1c
Also known as: Hb A1c and 1-5 Anhydroglucitol
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.
Methodology
Automated Analyzer (Clinical Chemistry)
Biomarkers
LOINC Codes
- 4548-4
- 53835-5
Result Turnaround Time
3-10 days
Related Documents
For more information, please review the documents below
Specimen
Whole Blood
Volume
3 mL
Minimum Volume
1 mL
Container
Lavender-top (EDTA) tube, green-top (lithium heparin) tube, gray-top (sodium fluoride) tube, or tan-top (K2 EDTA) tube
Storage Instructions
Refrigerate
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 14 days |
| Refrigerated | 14 days |
| Frozen | 14 days |
Other tests from different labs that may be relevant