Glucose Screen, Pregnancy
0020047
Ordering Recommendation
 
Mnemonic
GSCN
Methodology
Quantitative Enzymatic
Performed
Sun-Sat
Reported
Within 24 hours  
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Specimen Required
Patient Preparation
Collect at 60 minutes post-glucose load.  
Collect
Gray (sodium fluoride/potassium oxalate).  
Specimen Preparation
Separate plasma from cells within 24 hours. Transport 1 mL plasma. (Min: 0.2 mL)  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
  
Remarks
  
Stability
After separation from cells: Ambient: 24 hours; Refrigerated: 1 week; Frozen: 1 year  
Reference Interval
Values > 140 mg/dL constitute a positive screen.  Positive screens on pregnant patients should be followed by a diagnostic three-hour oral glucose tolerance test (Glucose Tolerance Test, Pregnancy 0020543).  
Interpretive Data
 
Note
Administer 50 g glucola. Do not mix with water unless directions on product label indicate to do so. The patient does not need to be fasting for the screen. During the test period, the patient should remain inactive and receive nothing by mouth (including tobacco); a small sip of water or ice is permissible. Reasons for invalid results include emesis and conditions that delay stomach emptying.
CPT Code(s)
82950
Components
Component Test Code*Component Chart Name
0020047Glucose Screen, Pregnancy
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Blood Glucose
  • Blood Sugar
  • GLU
  • GTT
  • OGTT
  • Oral Glucose Tolerance Test