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Free Thyroxine


  • Chemistry

General Information

Name Information
Turnaround Time:Daily
Analytical - Method:competitive immunoassay using direct chemiluminescent technology
Reportable - Test Results Type:Quantitative
Units - Conventional:ng/dL

Specimen Information

Name Information
Minimum Volume:25 µL
Preferred Volume:200 µL
Rejection Criteria:• Specimens with volume less than 25 µL are rejected as QNS with the appropriate message code. • Specimens that exceed the “Specimen Acceptability” stability but are within 7 days stability are treated with caution. • Specimens that exceed 7 days stability are rejected as NSA with the message code ML04: NSA due to age of specimen, greater than 7 days.
Collection Instructions:Collect all blood samples in serum separator tubes, observing universal precautions for venipuncture. Allow samples to clot adequately before centrifugation.
Collection Patient Preparation:NA
Container:Collect all blood samples in serum separator tubes