At LabCorp, Free T3 is drawn in a Red-top tube, gel-barrier tube or green-top (lithium heparin) tube. Do not use oxalate, EDTA or citrate plasma., order code 010389.

LabCorp collection requirements

Free T3 tube and order code at LabCorp

Primary tube

Red-top tube, gel-barrier tube or green-top (lithium heparin) tube. Do not use oxalate, EDTA or citrate plasma.

Order code

010389

Minimum volume

0.7 mL (Note: This volume does not allow for repeat testing.)