Urea Nitrogen, Body Fluid
| Abbrev Code: | FBUN | ||
| Order Code: | LAB3463 | Order Name: | Urea Nitrogen Fluid |
| Synonyms: | FBUNP | ||
| Methodology: | Roche: Kinetic with urease and glutamate dehydrogenase
Vista: Bichromatic rate |
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| CPT Codes: | 84520 x1, 84520 x1 | ||
| Turnaround Time: | Performed and reported 24 hours/day. | ||
Collection Instructions
| Specimen: | Body fluid |
| Optimal Volume: | 1.25 mL |
| Minimum\Peds Volume: | 0.6 mL |
| Container: | Plastic leakproof container, sterile |
| Causes for Rejection: | Too viscous to sample |
Processing and Shipping
| Specimen Processing: | Aliquot 1.25 mL, 0.6 mL minimum. Store in refrigerator. |
| Shipping Instructions: | Ship at refrigerated temperature. |
| Stability: | Roche: To be determined by M Health Fairview.
Vista: 1 day at room temperature; 7 days refrigerated. |
| Test Performed at or Referral Lab | Chemistry (Roche-UMMC East, UMMC/UMMCH-West Bank) |
Interpretive
| Reference Range: | No reference ranges have been established. This result should be interpreted in the context of the patient's clinical condition and compared to simultaneous measurement in the patient's blood. |
| Use: | To determine origin of body fluids, i.e., urine vs. other sources. |
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