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Glucose, 2-Hour Postprandial, Plasma or Serum
MessageThe 2-hour post-load (75 g) glucose determination is considered the best single specimen for diabetes screening
Test Code
544
CPT Codes
82950
Preferred Specimen
Submit only 1 of the following specimens:
Plasma
Container/Tube: Green-top (heparin) tube(s)
Specimen Volume: 3 mL (minimum volume: 0.5 mL) of plasma
Collection Instructions: Draw blood in the morning after an overnight fast as follows:
1. Patient should consume an adequate meal or glucose load 2 hours before test as specified by patient’s physician.
2. Patient is allowed usual meal (breakfast or lunch).
3. Patient must complete meal within 15 to 20 minutes.
4. Specimen is to be drawn 2 hours from beginning of meal.
5. It is preferable to administer 75 g glucose, allowing 5 minutes for consumption.
Note: 1. Indicate plasma. 2. Label specimen appropriately (plasma).
Serum
Container/Tube: Serum gel tube(s)
Specimen Volume: 3 mL (minimum volume: 0.5 mL) of serum
Collection Instructions: Draw blood in the morning after an overnight fast as follows:
1. Patient should consume an adequate meal or glucose load 2 hours before test as specified by patient’s physician.
2. Patient is allowed usual meal (breakfast or lunch).
3. Patient must complete meal within 15 to 20 minutes.
4. Specimen is to be drawn 2 hours from beginning of meal.
5. It is preferable to administer 75 g glucose, allowing 5 minutes for consumption.
Note: 1. Indicate serum. 2. Label specimen appropriately (serum).
Plasma
Container/Tube: Green-top (heparin) tube(s)
Specimen Volume: 3 mL (minimum volume: 0.5 mL) of plasma
Collection Instructions: Draw blood in the morning after an overnight fast as follows:
1. Patient should consume an adequate meal or glucose load 2 hours before test as specified by patient’s physician.
2. Patient is allowed usual meal (breakfast or lunch).
3. Patient must complete meal within 15 to 20 minutes.
4. Specimen is to be drawn 2 hours from beginning of meal.
5. It is preferable to administer 75 g glucose, allowing 5 minutes for consumption.
Note: 1. Indicate plasma. 2. Label specimen appropriately (plasma).
Serum
Container/Tube: Serum gel tube(s)
Specimen Volume: 3 mL (minimum volume: 0.5 mL) of serum
Collection Instructions: Draw blood in the morning after an overnight fast as follows:
1. Patient should consume an adequate meal or glucose load 2 hours before test as specified by patient’s physician.
2. Patient is allowed usual meal (breakfast or lunch).
3. Patient must complete meal within 15 to 20 minutes.
4. Specimen is to be drawn 2 hours from beginning of meal.
5. It is preferable to administer 75 g glucose, allowing 5 minutes for consumption.
Note: 1. Indicate serum. 2. Label specimen appropriately (serum).
Transport Temperature
Refrigerate
Methodology
Hexokinase
Setup Schedule
Monday through Sunday
Reference Range
2-HOUR GLUCOSE
Two 2-hour postprandial glucose results >=200 mg/dL are considered diagnostic of diabetes mellitus
Two 2-hour postprandial glucose results >=200 mg/dL are considered diagnostic of diabetes mellitus
Performed By
CoxHealth
