What does “urine glucose 2+, negative” mean?
When I visited the doctor, I noticed “urine glucose: 2+ negative” written on my lab report. What does “urine glucose: 2+ negative” mean?
Doctor's answer (1)
“Urine glucose: 2+ negative” is an incorrect statement, as “2+” and “negative” represent contradictory concepts.
Urinalysis for glucose measures the concentration of glucose in urine. Under normal physiological conditions, urine should not contain glucose; therefore, the expected result of a urine glucose test is “negative.”
In conditions such as diabetes mellitus or renal glycosuria, glucose may appear in the urine, resulting in a “positive” urine glucose test. “2+” is a semi-quantitative indicator reflecting a relatively high concentration of glucose in the urine.
A urine glucose test result of “2+” indicates a significantly elevated urinary glucose level and thus constitutes a positive finding. If this occurs, further evaluation—including oral glucose tolerance testing and other relevant investigations—is recommended.
