GLU T GEST

Glucose Tolerance-Gestational (100 G Dose), Plasma

EPIC Test Procedure Code: LAB2166 - Glucose Tolerance Gestation (3 Hour Panel), which includes LAB2788 (Fasting); LAB2785 (1HR); LAB2786 (2HR); and LAB2787 (3HR)

Performing Lab:
Saint Luke's Regional Laboratories
Patient Preparation:

1. It is suggested that the patient follow a special high carbohydrate (150 g) diet for 3 days prior to this test with unrestricted physical activity. 
2. The patient should be instructed to fast, preferably ten (10) to sixteen (16) hours prior to the start of collection.

Container Type:
Grey top (potassium oxalate/sodium fluoride) tube
Specimen Type:

Plasma

Preferred Volume:
1 mL
Minimum Volume:
0.5 mL
Collection Procedure:

1. During the collection period the patient should remain inactive, and receive nothing by mouth (including tobacco). Water or ice is permissible.  
2. Draw blood from a the fasting patient.  
3. After a fasting specimen is collected, the patient will drink 100 g glucose loading dose. Ingestion should be completed within 10 minutes. 
4. Draw blood at 1 hour, 2 hours and 3 hours after ingestion of dose. 
5. Spin down, separate the plasma from the cells as soon as possible after draw. 
6. Label the specimens appropriately (corresponding draw time).

Store and Transport:
Refrigerated
CPT Codes:

Includes first 3 specimens
82951 - Glucose Tol Gestational Fast (EAP 30012830)

Each additional specimen
82952 - Glucose Tol Gestational 3HR (EAP 30012930)

Test Schedule:
Monday through Sunday
Method:
Hexokinase
Reference Ranges:

Fasting:

70 - 94

mg/dL

1 Hour:

70 - 179

mg/dL

2 Hour:

70 - 154

mg/dL

3 Hour:

70 - 139

mg/dL

Note: Interpretation would also apply to 75 g dose.

Lab Personnel

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