T3 UPTAKE

Mnemonic

T#RU

Synonym

T-Uptake

Collect

Serum or Plasma, one gold (SST), lavender (EDTA) or green (sodium or lithium heparin) top tube

Handling

Allow serum to clot completely at room temperature. Separate serum or plasma from cells ASAP.

Preferred Volume

1.0 mL

Minimum Volume

0.5 mL

Transport

Refrigerated

Rejection Criteria

Grossly hemolyzed specimens

Stability

Ambient: 8 days; Refrigerated: 2 weeks; Frozen: 2 years

Performed

7 days/week

Reported

Within 24 hours

Method

Electrochemiluminescent Immunoassay

Referral Lab

ARUP (0070135)

Reference Values

28-41% Uptake

CPT Codes

84479

Last Updated: Thursday, January 5, 2017 03:42:30 AM