Test Code LAB0213371 T4 (Thyroxine), Free, Plasma or Serum

Methodology

Chemiluminescent Microparticle Immunoassay

CentraCare Laboratory Services

Specimen Type: Plasma

Container/Tube:

Preferred: Green top (lithium heparin)

Acceptable: Serum (Red top, Gold/SST). Label specimen appropriately.

Specimen Volume: 1 mL

Minimum Volume: 0.25 ml

Refrigerated

0.7-2.0 ng/dL

Monday through Sunday

84439