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Test Code GLUPS GTT GLU PREGNANCY DIAB SCREEN

Important Note

Recommended time for testing is at 24-28 weeks gestation

Performing Location

Southwestern Vermont Medical Center

Collection Instructions

Refer to Venipuncture and Glucose Tolerance Protocols

 

Collection Container

Gold top or Marble Red top vacutainer

 

Specimen Required/Volume

1.0 mL

Specimen Type

serum

Turn-Around Guidelines

Upon arrival daily

Reference Values

Borderline: 135-150 mg/dL

Positive: >150 mg/dL (Recommend gestational GTT)

Strongly Positive: >182 mg/dL (GTT optional)

 

 

Method

VITROS5600-Glucose Oxidase (Colorimetric)

CPT

82950

LOINC

1504-0

Special Handling

  1. It is recommended that the patient be fasting but this is not absolutely necessary.

  2. Have patient drink 150ml (5oz) of Dextol Glucose Tolerance Beverage containing 50 grams of glucose. Record the time.

  3. Instruct patient to remain seated and not to drink (except water), eat or smoke until test is complete.

  4. Draw blood sample one hour from the time the Dextol was given.