T Uptake T3UP

Synonyms

Allscripts (AEHR) Order Name

T3 Uptake

Sunrise Clinical Manager (SCM) Order Name

T3 Uptake

Clinical Info

Specimen Type

Blood

Container

Gold Top Tube

Collection Instructions

Container/Tube: Gold-top tube(s)
Specimen: 1 mL of serum
Transport Temperature: Refrigerate
Stability:  8 Days Room Temperature
                14 Days Refrigerated
               24 Months Frozen

Transport Instructions

Refrigerate

Specimen Stability

8 Days Room Temperature
                14 Days Refrigerated
               24 Months Frozen

Methodology

Electrochemiluminescence Immunoassay (ECLIA)
Includes calculation of free thyroxine (T4) index when T4 is also ordered.

Days Performed

Monday through Sunday, Continuously

Performing Laboratory

Northwell Health Laboratories

CPT

84479

PDM

5300420

Result Interpretation

T3UP:             0.8-1.3  TBI Units
%T3UP:          28-41    %
FTI:                 4.4-11.4 Index
%FTI:              1.4 - 4.8    %

Forms