| Urinalysis (Chemistry and Microscopic) (087-0157) | |
|---|---|
| Test Mnemonic: | UA |
| Specimen Requirements: | |
| Test Included: | Gross description; qualitative urine chemistry for pH, protein, glucose, ketone, bilirubin, blood, urobilinogen, leukocyte esterase and nitrite; specific gravity; and microscopic exam of urinary sediment |
| Collection: | Volume: 20 mL Preferred: Fresh early A.M. mid-stream specimen after overnight fasting; Acceptable: Random urine. Disposable, 4.5 oz sterile specimen container.
|
| Minimum Volume: | Minimum Volume: Automated UA: 4 mL Manual UA: 1 - 4 mL (Samples that are insufficient (<1.0 mL) for Manual Urinalysis are rejected, with an exception for Pedi patient (≥0.5mL) |
| Storage/Transport: | A fresh voiding should be examined within 1 hour, or it should be refrigerated . |
| Causes for Rejection: | Specimens contaminated with feces or less than 1 mL of urine, incomplete and/or incorrect sample identification, improper storage/transport. |
| Reference Range: | By report (reports may vary based on instrumentation, patient age and sex) |
| Turnaround Time: | Routine: 2 hours; STAT: 1 hour |
| Methodology: | ChemStrip; Microscopy |
| Performed: | Clinical Chemistry |
| CPT 4 Code: | 81001 |
| Note: | If the specimen is not fresh or has not been kept refrigerated, bacterial growth will occur & result in "ammoniacal" alkaline urine with resultant degeneration of casts and cells. Glycolysis also results in false low glucose findings. |
| When ordering tests for which Medicare or Medicaid reimbursement will be sought, physicians should only order tests that are medically necessary for the diagnosis or treatment of the patient. Components of the organ or disease panels may be ordered individually. The diagnostic information must substantiate all tests ordered and must be in the form of an ICD-10 code or its verbal equivalent. | |