ARUP's Laboratory Test Directory
| 0093244: Thyroxine, Free by Equilibrium Dialysis/HPLC-Tandem Mass Spectrometry |
| Test Mnemonic: FT4 ED-TMS | |
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#ExistMethodology>
Methodology: Equilibrium Dialysis/High Performance Liquid Chromatography-Tandem Mass Spectrometry
*ExistMethodology> #ExistPerformed> Performed: Mon-Fri *ExistPerformed> #ExistReported> Reported: 2-5 days *ExistReported> |
| Specimen Required: | |
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#ExistCollect>
Collect: One 5 mL plain red.
*ExistCollect> #ExistTransport> Transport: 2 mL serum at 2-8°C. (Min: 1 mL) Submit specimen in an ARUP Standard Transport Tube. *ExistTransport> #ExistPedCollectTransport> Pediatric Collection/Transport: 0.5 mL serum at 2-8°C. *ExistPedCollectTransport> #ExistRemarks> Remarks: Avoid use of serum separator tubes and gels. *ExistRemarks> #ExistStability> Stability: After separation from cells: Ambient: 4 days; Refrigerated: 2 weeks; Frozen: 1 month *ExistStability> |
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| Reference Interval: | ||||||
#ExistRefRangeTable>
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| CPT Code(s): | |
| 84439 |