Glucose, Plasma
Use
Measurement of glucose concentration in plasma is used for diagnosis and monitoring of carbohydrate metabolism disorders, including diabetes mellitus and hypoglycemia. It assists in the assessment of current glycemic status in patients.
Special Instructions
Not provided.
Limitations
Specimens must be separated from cells promptly. Fasting is often required (commonly ≥8 hours) to ensure accurate results; non-fasting samples may yield misleading results.
Methodology
Automated Analyzer (Clinical Chemistry)
Biomarkers
Result Turnaround Time
Not provided.
Related Documents
For more information, please review the documents below
Specimen
Plasma
Volume
1 mL
Minimum Volume
0.5 mL
Container
fluoride/oxalate (gray‑top) tube
Collection Instructions
Plasma collected in a fluoride/oxalate (gray‑top) tube; serum acceptable if separated immediately; plasma from lithium or sodium heparin tubes also acceptable.
Patient Preparation
Fasting required (≥8 hours, as defined by provider).
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 24 hours (whole blood grey‑top); 4 days (serum) |
| Refrigerated | 72 hours (whole blood grey‑top); 7 days (serum) |
| Frozen | Unacceptable for whole blood grey‑top; 28 days (serum) |