Glucose, Gestational Screen (50g)

Glucose, Gestational Screen (50g)

Patient Preparation: The patient is given a 50 gram dose of glucose and a single blood specimen is obtained one hour later. Fasting is not required.

Preferred Specimen(s): 1 mL plasma collected in a fluoride/EDTA Tube

Instructions: The patient is given a 50 gram dose of glucose and a single blood specimen is obtained one hour later. Fasting is not required. Note: The test should be performed between weeks 24 and 28 of gestation.

Transport Container Fluoride/EDTA Tube or plastic screw-cap vial

Transport Temperature

• Ambient 5 days,
• Refrigerated 14 days

Reject Criteria

• Gross hemolysis
• Anticoagulants other than fluoride/oxalate
• Serum

Methodology Hexokinase

Clinical Significance A value of 130 mg/dL or greater indicates the need for a full diagnostic, gestational glucose tolerance performed in the fasting state to determine if the patient has gestational diabetes.

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