Specimen:
Collect
- One SST
Also Acceptable:
- One Green Top (Li Heparin)
- One Lavender (EDTA)
- One Pink Top (EDTA)
- One Red Top
Submit
- 2 mL (Min:1 mL) Serum . Submit Refrigerated. Submit in a Standard Transport Tube.
Also Acceptable:
- 2 mL (Min:1 mL) Plasma . Submit Refrigerated. Submit in a Standard Transport Tube.
Special Handling
- Allow specimen to clot completely at room temperature
- Avoid repeated freeze and thaw cycles.
- For patients receiving therapy with high biotin doses (>5 mg/day), no laboratory test specimen should be collected until at least 8 hours after the last biotin administration.
- Minimize air exposure
- Separate from cells ASAP
- If the TSH is abnormal, then the Free T4 (test# 2146) test will be performed. Additional charges will apply.
Rejection Criteria
- Grossly Hemolyzed Samples
Stability
Ambient: 2 Hour(s); Refrigerated: 7 Day(s); Frozen: 1 Month(s); Incubated: Unacceptable
Methodology
- Electrochemiluminescence Immunoassay (ECLIA)
Performed
Mon-Fri
Reported
1-3 Day(s)
CPT Codes
- 84443
Interpretive Data
General Reference Range : 0.270-4.20 uIU/ml
Male Reference Ranges
Female Reference Ranges
Biotin in specimens taken from patients on high-dose biotin therapy or supplements may intefere with this test and cause inaccurate test results. It is recommended that for patients receiving therapy with high biotin doses (> 5 mg/day), no laboratory test specimen should be collected until at least 8 hours after the last biotin administration.
Male Reference Ranges
- 0 - 1 year(s) : 0.40-8.6 uIU/ml
- 1 - 2 year(s) : 0.36-7.6 uIU/ml
- 2 - 4 year(s) : 0.33-6.7 uIU/ml
- 4 - 5 year(s) : 0.34-6.1 uIU/ml
- 5 - 6 year(s) : 0.34-6.0 uIU/ml
- 6 - 7 year(s) : 0.35-5.8 uIU/ml
- 7 - 8 year(s) : 0.35-5.7 uIU/ml
- 8 - 9 year(s) : 0.35-5.6 uIU/ml
- 9 - 11 year(s) : 0.36-5.5 uIU/ml
- 11 - 12 year(s) : 0.36-5.4 uIU/ml
- 12 - 150 year(s) : 0.270-4.20 uIU/ml
Female Reference Ranges
- 0 - 1 year(s) : 0.40-8.6 uIU/ml
- 1 - 2 year(s) : 0.36-7.6 uIU/ml
- 2 - 4 year(s) : 0.33-6.7 uIU/ml
- 4 - 5 year(s) : 0.34-6.1 uIU/ml
- 5 - 6 year(s) : 0.34-6.0 uIU/ml
- 6 - 7 year(s) : 0.35-5.8 uIU/ml
- 7 - 8 year(s) : 0.35-5.7 uIU/ml
- 8 - 9 year(s) : 0.35-5.6 uIU/ml
- 9 - 11 year(s) : 0.36-5.5 uIU/ml
- 11 - 12 year(s) : 0.36-5.4 uIU/ml
- 12 - 150 year(s) : 0.270-4.20 uIU/ml
Biotin in specimens taken from patients on high-dose biotin therapy or supplements may intefere with this test and cause inaccurate test results. It is recommended that for patients receiving therapy with high biotin doses (> 5 mg/day), no laboratory test specimen should be collected until at least 8 hours after the last biotin administration.
Components
- 2190 - TSH w/FT4 Reflex
Last Updated: November 6, 2024 @ 10:13 am
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