Free T4 (ChL) Measurement of free T4 (unbound) by chemiluminescence. NameFree T4 (ChL)Code1174SectionClinical PathologySpeciesCanine, FelineSpecimen0.5 mL serumSampling RequirementsAvoid hemolysisCollection ContainerRemove from red cells and place sample in an additive free transport tube.Packing InstructionsLabel all samples.Special InstructionsWhen multiple thyroid tests are ordered, turnaround time will be based on the thyroid test with the longest turnaround time. Price$15.00Schedule Lab Schedule Turnaround time College Station Monday, Tuesday, Wednesday, Thursday, Friday1—2 days