Urinalysis

Test Code

UAI

Alias/See Also

Includes

Glucose,Protein,Bilirubin,Urobilinogen,Blood,Ketones,Nitrite,pH,Specific gravity,Leukocytes,Microscopic analysis

Preferred Specimen

10 mL urine (5 mL minimum)

Instructions

Submit freshly voided clean catch specimen to Laboratory within 2 hours of collection (or store refrigerated until sent).

Transport Container

Urine collection cup

Specimen Stability

Room temperature: 2 hours, Refrigerated: 24 hours, Frozen: unacceptable

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Cloudy and bloody specimens are unacceptable.

Reference Range

See individual report

Clinical Significance

Glucose	A small amount of glucose may be detected in normal urine. Generally, the amount of glucose is below the sensitivity level of the method; however, on occasion it may produce a ± (trace) result. Consistently positive glucose results should be clinically investigated.
Protein	Although very small quantities of protein are normally excreted in urine, the amount is generally below the sensitivity level for detection. Positive results may require clinical assessment/additional testing to determine its significance.
Bilirubin	In normal urine, no bilirubin is normally detected. Positive findings should be diagnostically and clinically investigated.
Urobilinogen	Healthy individuals may excrete a small amount of urobilinogen and it may be increased especially after exercise. Concentrations are generally at their peak in the afternoon.
pH	Normal urine pH ranges from 5.0 to 8.0 and is influenced by diet. The typical value for a first morning specimen from healthy individuals is between pH 5.0 – 6.0.
Blood	A blue-green dotted reaction indicates the presence of erythrocytes. Up to 5 erythrocytes/µL may be found in normal urine specimens. Urine from menstruating women may contain blood. A large amount of blood should be clinically investigated.
Ketones	Ketones are not normally detected in urine specimens from healthy individuals. However, urine specimens from individuals who are fasting, pregnant, or who undergo regular strenuous exercise, may exhibit significant amounts of ketones. The presence of ketones, in urine specimens from patients with diabetes, may provide a useful marker for metabolic status.
Nitrite	A negative result during fasting can occur since nitrates will not be excreted into the urine. A nitrite concentration as low as 0.08 mg/dL may be detected and produce a positive test.
Leukocytes	Normal urine specimens should not produce a positive reaction. Small amounts of leukocyte esterase, causing a positive reaction, should be repeated using a fresh urine specimen, from the same patient. Positive results require further testing for pyuria.

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.