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Test Directory

4225 T3 (TrIIodothyronine) Uptake

Specimen Type
Specimen Stability
Reference Range
Serum
7 Days 2 - 8° C
22.5-37.0 %

Specimen Requirements

Specimen Type: Serum
Container: 1 Serum Separator Tube (SST)
Temperature: Refrigerated
Preferred Vol: 1.00 mL
Min Vol: 0.50 mL

Method

Immunochemiluminometric

Schedule

Mon-Sat

Turn-Around Time

24hrs; Also offered STAT at an additional charge

Instructions/Notes

Clinical Utility

In combination with T4, (Thyroxine) T3 Uptake is used to help evaluate thyroid gland function; to help diagnose hypothyroidism or hyperthyroidism.

CPT Codes

84479

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