88620:THYROID STIMULATING IMMUNOGLOBULIN (TSI)

Print View Attached Docs:
88620:THYROID STIMULATING IMMUNOGLOBULIN (TSI)
Alias Names: TSI
Methodology: Bioassay / Chemiluminescence (CL)
Edit Date: 11/15/2006
Performed: Monday, Tuesday, Thursday, Saturday
Released: 2-5 days after setup at PeaceHealth Laboratories’ reference lab.
CPT Code: 84445-90
Specimen Collection Details
Collection: One 7.5 mL serum separator tube (SST). Also acceptable: One 5 mL red top tube.
Handling: Allow to clot, centrifuge and separate serum from cells into a plastic vial. Freeze. Allow no more than one freeze/thaw cycle. If multiple tests are ordered, send separate specimen for this test.
Stability: Specimen stable 2 hours ambient, 6 days refrigerated, or 3 months frozen.
Standard Volume: 1 mL serum.
Minimum Volume: 0.7 mL serum.
Transport: Frozen on dry ice.
Rejection Criteria: Plasma; specimen frozen and thawed more than once.

Negative
≤ 109% basal activity
Indeterminate
110- 129% basal activity
Positive
≥ 130% basal acitvity is consistent with Graves’ disease.

PeaceHealth Laboratories