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HelpEpic Code LAB1230822 Glucose, Random, Urine
Additional Codes
Mayo code: GLUR1
Replaces test LAB1230032 (RGLUR)
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Useful For
Limited usefulness for routine screening or management of diabetes mellitus
Specimen Type
UrineSpecimen Required
Container/Tube: Plastic urine container
Specimen Volume: 20 mL
Collection Instructions:
1. Collect a random urine specimen.
2. No preservative.
Specimen Minimum Volume
2 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 72 hours | |
| Ambient | 2 hours |
Reject Due To
| Preservative added Any sample other than a random urine |
Reject |
Day(s) Performed
Monday through Sunday
Reference Values
Negative
Clinical Information
The test is specific for glucose. No other substance excreted in urine is known to give a positive result, including other reducing substances (eg, galactose, fructose, and lactose). This test may be used to determine whether the reducing substance found in urine is glucose. Glucosuria occurs when the renal threshold for glucose is exceeded (typically >180 mg/dL); this is most commonly, although not exclusively, seen in diabetes. However, if the urine glucose is high and the patient is not known to have diabetes mellitus, more specific testing should be considered (fasting blood glucose and/or glycosylated hemoglobin).
Interpretation
Small amounts of glucose are normally excreted by the kidney. These amounts are usually below the sensitivity of this test but, on occasion, may produce a color between negative and 100 mg/dL (trace), which is interpreted by the instrument as a positive. Results at the first positive level may be significantly abnormal if found consistently.
Reporting Name
Glucose, Random, UMethod Name
Reflectance Spectrophotometry
Method Description
Glucose analysis is based on a double sequential enzyme reaction. One enzyme, glucose oxidase, catalyzes the formation of gluconic acid and hydrogen peroxide from the oxidation of glucose. A second enzyme, peroxidase, catalyzes the reaction of hydrogen peroxide with a potassium iodide chromogen to oxidize the chromogen to colors ranging from green to brown. The Clinitek Status+ analyzer is a reflectance spectrophotometer that analyzes the intensity and color of the light reflected from the reagent areas. No calculations are required.(Package insert: Multistix 10 SG Reagent Strip. AN30516J. Siemens; Rev, 02/2011)
CPT Code Information
82945
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| GLUR1 | Glucose, Random, U | 53328-1 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| GLUR1 | Glucose, Random, U | In Process |
Report Available
1 dayTest Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.Clinical Reference
1. Brunzel NA: Chemical examination of urine. In: Fundamentals of Urine and Body Fluids. 4th ed. Saunders; 2018:85-125
2. Chen J, Guo H, Yuan S, et al: Efficacy of urinary glucose for diabetes screening: a reconsideration. Acta Diabetol. 2019 Jan;56(1):45-53