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Test Code GLS GLUCOSE, SCREENING

Important Note

Test subject to Medicare National Coverage Determination (NCD) 190.20 Blood Glucose Testing and Diabetes Screening.
A glucose of >180 mg/dL will append text to the glucose result stating, "Elevated screening glucose value greater than 180 mg/dL.  Please order follow up Hemoglobin A1c."  A call will also be made to the ordering provider to relay this message if the patient does not have an A1c result in Epic in the past 3 months.

Additional Codes

Primary ID Epic Code Mayo Access ID
GLS LAB2565 N/A

 

Specimen Information

Container Specimen Temperature Collect Vol Submit Vol Min Vol Stability
SST Serum Refrigerate 4 mL 1 mL 0.5 mL 7 days
Lithium Heparinized (green top) Plasma Refrigerate 4 mL 1 mL 0.5 mL 7 days
Green Microtainer   Refrigerate 0.6 mL N/A N/A 7 days

 

Test Schedule / Analytical Time / Test Priority

Daily / 1 day / Available STAT

Method

Colorimetric

CPT(s)

Description CPT Code
Glucose, Screening                             82947

 

Instrumentation

Ortho Vitros 5600

Reference Range

Age

Sex

Physiological Status

Low

High

Units
0 - 1 day All Fasting 40 100

mg/dL
1 - 7 days All Fasting 50 100 mg/dL
 ≥7 days All Fasting 70 100 mg/dL

A glucose of >180 mg/dL will trigger a Hemoglobin A1C order.

Section

Chemistry-1

Performing Location

University of Vermont Medical Center

Is the UVMMC lab NY State Certified to perform this testing?  Yes/No

Yes

Test Note

All adult patients (those 18 or older), who are not pregnant (where glucose goals are different) or admitted to hematology/oncology for chemotherapy for a cancer-related illness, that are admitted to UVM Medical Center (including the Emergency Department) will have a screening blood glucose level ordered. In addition, if the glucose level is above 180 mg/dL, the glucose result will have a comment attached stating, “Elevated Glucose, screening glucose greater than 180 mg/dl, please order follow up hemoglobin A1c.” UVM Medical Center recommends that a hemoglobin A1c be ordered unless there is one in the records within the last 60 days.  Patients on dialysis will be exempt from obtaining a hemoglobin A1c, given that this test is not accurate for that patient population.

LOINC Code Information

Result Code Reporting Name LOINC Code
GLSS Glucose, Screening 2345-7