40249:THYROID STIMULATING HORMONE (TSH) WITH REFLEX TO FT4, IF INDICATED

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40249:THYROID STIMULATING HORMONE (TSH) WITH REFLEX TO FT4, IF INDICATED
Methodology: Chemiluminescent Immunoassay (CLIA)
Edit Date: 6/11/2010
Performed: Daily
Released: Same day as tested
CPT Code: 84443 / 84439 FT4, if reflexed
Specimen Collection Details
Collection: One 7.5 mL serum separator tube (SST). Also acceptable: One 4 mL green top tube (heparin) or one 4.5 mL light green plasma separator tube (PST).
Handling: Centrifuge SST or PST and transport in original tube. Centrifuge green top tube, separate plasma from cells into a plastic vial. Refrigerate. Freeze if specimen cannot be assayed within 7 days. Allow no more than one freeze/thaw cycle.
Stability: 8 hours ambient, 7 days refrigerated, or 1 month frozen.
Standard Volume: 1 mL serum or plasma
Minimum Volume: 0.4 mL serum or plasma
Transport: Refrigerated, or frozen on dry ice.
Rejection Criteria: Use of EDTA tube.

Reference Range:
Male/Female ages 1 year to adult. 0.61-1.27 ng/dL

PeaceHealth Laboratories