Direct Immunoassay (RIA)
No reference intervals are available for this test
Patient should not be on aspirin, indomethacin, or anti-inflammatory medications, if possible, for at least 48 hours prior to collection of specimen.
12 - 16 days
Collect urine in a sterile container. Freeze, or aliquot and freeze within 30 minutes of collection.
Test sent to Mayo Clinic Laboratories, perfored by Interscience Institute