Kenya Medical Laboratory Tests
Free tetraiodothyronine (FT4) Test in Kenya
Brief Descriptionit is a blood test that measure the amount of thyoxine in the blood
Patient PreparationThe patient should avoid taking biotin supplements at least 72 to sample collection.
Sample Typeserum or plasma
Sample volume1ml with a minimum volume of 0.7ml
Sample collection ContainerGel-barrier"," red-top or green top tube (lithium heparin). Avoid using EDTA"," oxalate or citrate p
Sample collection instructionstransfer separated serum to a plastic transport tube if a red top tube is used..
Sample storageStore sample at room temperature
Reference range>19 years;0.82-1.77ng/dL
Results Turnaroundwithin 24 hours of receipt of samples
Diseases / Diagnostic Indicatorsincreased levels may be due to nonthyroid disease while low values are indicated in nonthyroidal illness.