| OSMOLALITY, body fluid (087-0673) | |
|---|---|
| Test Mnemonic: | OSMO BF |
| Specimen Requirements: | |
| Collection: | Plastic container with tight fitting lid |
| Container: | Plastic container |
| Storage/Transport: | Delivered to Sample Management within 3 hours of collection. |
| Specimen Preparation: | Centrifuge the specimen prior to analysis to remove possible cellular and bacterial contaminants. |
| Stability: | Room temperature for ≤ 3 hours; and Refrigerated for ≤7 days. |
| Causes for Rejection: | Specimen too viscous for sampling, 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: 8 hours; ASAP: 4 hours; STAT: 1 hour |
| Methodology: | Freezing Point Depression |
| Performed: | Clinical Chemistry |
| CPT 4 Code: | 83935 |
| Note: | Indicate source of fluid on request form. |
| 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. | |