GLUCOSE TOLERANCE GESTATIONAL 2H POST 75G DOSE (FASTING, 1 HR, 2 HR)

Additional Codes

Software	Test Code
Label Text	GTTG2
EPIC	LAB20307

Performing Laboratory

NorDx Laboratories

Useful For

Diagnosing diabetes mellitus (gestational)

Method Name

Photometric/Hexokinase

Reference Values

Fasting: 70-91

1 Hour: 70-179

2 Hour: 70-152

Days and Times Test Performed

Monday through Sunday

Report Available

1 Day

Profile Information

Individual Test Description
GLUCOSE 1H POST 75G CHALLENGE (GEST)
GLUCOSE 2H POST 75G CHALLENGE (GEST)
GLUCOSE BASELINE PRE CHALLENGE (GEST)

Specimen Type

Serum

Preferred Container

Serum Separator Tube (SST)

Preferred Volume

Serum: 1 mL (Serum Separator Tube (SST))

Minimum Volume

Serum: 0.3 mL (Serum Separator Tube (SST))

Specimen Collection and Handling

1. Draw a fasting specimen in either a plain red-top tube or serum gel tube. A gray sodium fluoride tube may be substituted if the specimen cannot be spun and separated within two hours of collection (send refrigerated).

2. Label with required patient identification and collection information, and include “fasting” on the label.

3. After Glucola has been administered draw a specimen at the 1 and 2 hour time intervals using the specimen collection criteria noted above.

To Process:

Spin specimen, separate from clot within 2 hours and send refrigerated.

Specimen Stability Information

Specimen Type: Serum

Refrigerated: 3 Days

Room Temp: 2 Hours

Add On Capable

Not Permitted

CPT Code Information

CPT Code	CPT Description	CPT Disclaimer
82951	Glucose Tolerance Test (GTT), Quantitative, Blood, 3 Specimens (Includes Glucose)

Performing Laboratory Location