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Published on February 06, 2018

GGTT OB 

SIM

11400 

CPT

82950 

Synonyms

Glucose Tolerance - OB 

Specimen Type

Plasma or serum 

Container

3.5 ml Green - Lithium heparin plasma separator
4.0 ml Gold-top serum separator

Collection Instructions

Collect 1 hour after Glucola.

Volume

2 ml plasma or serum
Min: 1 ml

Additional Information

None

Patient Preparation

Glucola

Specimen Processing Instructions

Plasma:  Centrifuge at 3380 rpm’s (±100) for a minimum of 10 minutes

Serum:  Allow to clot.  Centrifuge at 3380 rpm’s (±100) for a minimum of 10 minutes.

Centrifuge within 2 hours of collection.

Transport Requirements

Refrigerated

Specimen Stability

Room temperature:  8 hours   Refrigerated: 48 hours 

Rejection Criteria

•  If not centrifuged within 2 hours of collection.
•  Gross hemolysis

Reference Range

70-140 mg/dL

Critical Value

<40 mg/dL, >400 mg/dL 

Test Includes

Glucose 

Methodology

Timed endpoint method 

Testing Frequency

Daily, Monday - Sunday 

 

Reviewed By

Sandy Hammett 

Reviewed Date

2-6-18

Supplemental

  

Reviewed by Sandy Hammett on February 06, 2018

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