Vacuum Blood Collection Tube~1
4 month ago
### Key Features of the Glucose Collection Tube (Gray-Top):
- **Color:** Gray top
- **Additive:** Sodium fluoride (NaF) – acts as a metabolic inhibitor to prevent glycolysis (the breakdown of glucose by red blood cells after collection)
- **Purpose:** To preserve glucose levels in the blood sample, ensuring accurate results, especially if there’s a delay in processing.
- **Common Use:** Fasting glucose tests, random glucose tests, and other glucose-related diagnostics.
### Important Notes:
- **Timing:** Blood should be processed (centrifuged and plasma separated) within 1 hour of collection, or stored at room temperature or refrigerated (2–8°C) if immediate processing isn't possible. However, prolonged storage can still affect glucose stability.
- **Avoid Hemolysis:** Gentle handling is required to avoid hemolysis, which can interfere with test results.
- **Labeling:** Always label the tube clearly with patient information and time of collection.
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