Kenya Medical Laboratory Tests

Free tetraiodothyronine (FT4) Test in Kenya

Brief Description

it is a blood test that measure the amount of thyoxine in the blood


free thyroxine

Patient Preparation

The patient should avoid taking biotin supplements at least 72 to sample collection.

Sample Type

serum or plasma

Sample volume

1ml with a minimum volume of 0.7ml

Sample collection Container

Gel-barrier"," red-top or green top tube (lithium heparin). Avoid using EDTA"," oxalate or citrate p

Sample collection instructions

transfer separated serum to a plastic transport tube if a red top tube is used..

Sample storage

Store sample at room temperature

Reference range

>19 years;0.82-1.77ng/dL

Results Turnaround

within 24 hours of receipt of samples

Diseases / Diagnostic Indicators

increased levels may be due to nonthyroid disease while low values are indicated in nonthyroidal illness.