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Methodology: Radial Immunodiffusion (RID)
Edit Date: 1/22/2009
Performed: Tuesday, Friday
Released: 3-7 days after setup at PeaceHealth Laboratories’ reference lab
CPT Code: 86160-90
Specimen Collection Details
Collection: One 7.5 mL serum separator tube (SST). Plasma specimens not recommended.
Handling: Allow to clot for 30 minutes to 1 hour ambient. Centrifuge and separate serum from cells as soon as possible and place immediately on wet ice (2-8 degrees C) or freeze for extended transport. Non-frozen samples are acceptable but will be run with a disclaimer if results are abnormally low. If other testing is ordered, send separate specimen for this test.
Stability: 2 hours ambient or 14 days frozen. Unstable refrigerated.
Standard Volume: 1 mL serum.
Minimum Volume: 0.5 mL serum.
Transport: Frozen on dry ice.
Rejection Criteria: Specimen left to clot refrigerated; specimen subjected to repeated freeze/thaw cycles.

PeaceHealth Laboratories