Preferred amount: 1.0 mL Serum
Minimum amount: 0.5 mL Serum
In Gray-top Tube: No
In SST: Yes, within 1 hour of collection
Fasting required?: 12 hours recommended, not required
Special Instructions: Please indicate if the patient is fasting.
A two hour post prandial glucose (taken after a meal) is sufficient to diagnose or exclude all forms of diabetes mellitus at all but the earliest stages of development.