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Glucose, Tolerance Test, Gestational 1 Hour

Additional Codes

Atlas:

Test Code Test Name
GETSC Glucose, 1 hr Gest Diabetes Screen

 

Cerner:

Test Code Test Name
N/A Gestational Diabetes Screen (Glucose)

 

Specimen Requirements

Patient Preparation

Patient does not need to be fasting.  Patient is given 50 g glucola or 50g Fresh Test.  Fresh Test is an alternative to Glucola, and is provided by the patient.  NOTE:  It is also acceptable to have the patient consume another source of glucose (jellybeans, sugar water, etc) if directed to by their provider.

 

Blood is to be drawn one hour later.  Fasting specimen not collected. 

 

Instruct patient to remain fasting, (no food, no drinks, only sips of water) throughout test.  Advise no smoking and limited exercise.  Advise patient to inform lab or nursing staff when symptoms of nausea, vomiting, dizziness,dyspnea, fainting occur.

 

Container Type: 

Gold Top 6mL SST Gel & Clot Activator Tube

Or

 

Green Top 5mL Lithium Heparin Separator Tube

Or

 

5.5mL Sodium Fluoride(NaF)/Potassium Oxalate Grey Top Tube

Specimen Type:

Serum or Plasma

 

Specimen Volume: 

2.5 mL Serum or Plasma

minimum .5 mL of Serum or Plasma

 

Specimen Handling/Transport:

Separate serum or plasma  from cells within 2 hours of collection if not in NaF (grey top).  Transport ambient room temperature.

 

Specimen Stability/Storage:

8 hours ambient room temperature or 24 hours ambient room temperature if NaF (grey top)

3 days refrigerated 2-8°C

Performing Laboratory

Munson Healthcare Laboratories

Methodology

Glucose Hexokinase

Reporting

Reference Range:

70 -140 mg/dL

 

Critical Decision:

Pediatric patients up to 21 years old  ≤ 35 mg/dL, ≥ 200 mg/dL 

Patients 21 years and older  ≤ 50mg/dL, ≥500 mg/dL

Note:  Critical values are called to the provider and communicated as critical.  Documentation of the call is recorded in the patient record.

Priority, Frequency, & Turnaround

Priority:

Non-Emergent

 

Frequency:

Monday through Sunday

 

Turnaround:

0-1 Day

CPT Code(s)

82950

Clinical Significance

Glucose is the major energy source for the human body.  Glucose determinations are ordered for the diagnosis and follow-up of abnormalities of carbohydrate metabolism.  This test is a screening test for gestational diabetes.