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Free Thyroxine


  • Chemistry
  • Health Assessment and Safety

General Information

Application:Clinical Trials
Turnaround Time:Daily
Analytical - Method:competitive immunoassay using direct chemiluminescent technology
Reportable - Test Results Type:Quantitative

Shipping Information

Units - Conventional:ng/dL

Specimen 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