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Mayo Clinic Laboratories

Test Code LAB4087 GLUCOSE PREGNANCY CHALLENGE

Specimen Type

Preferred Specimen: Lithium Heparin Plasma (Mint Green Top, Dark Green Top)
Alternative Specimen: Serum (SST, Gold, Corvac, Tiger, Red Top Tube) Sodium Flouride (Gray Top Tube)

Collection Instructions

Collect specimen 1 hour after 50 gram glucose load.

Specimen Volume

1 mL

Minimum Volume

0.5 mL

Turnaround Time

STAT: 1 hour after receiving all specimens
Routine: 4 hours

Test Schedule

Daily

Sample Stability

Refrigerated: 3 days if separated from the cells within 30 minutes of collection

Method

Hexokinase

Reference Ranges

Glucose,1 hr, pregnant LT 130 mg/dL

Test Components

Glucose-1 hr (PREG), mg/dL.

CPT Codes

82950