Ordering Recommendation

New York DOH Approval Status

This test is New York state approved.

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

Methodology

Quantitative Enzymatic Assay

Performed

Sun-Sat

Reported

Within 24 hours

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



Compliance Category

FDA

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.

Hotline History

N/A

CPT Codes

82950

Components

Component Test Code* Component Chart Name LOINC
0020047 Glucose Screen, Pregnancy 1504-0
* 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
Glucose Screen, Pregnancy