There are multiple definitions:

1. free thryroxine index(English)

   • Thyroid and parathyroid

2. farnesyltransferase(English)

   • see malignant glioma

3. fatal toxicity index(English)

   • refers to interaction between alcohol and drugs
   • BAC
   • Toxicology, Alcohol, Addiction and health
   • https://doi.org…60327103ht324oa

4. force-time integral(English)

   • may refer to pedobarography - a novel screening tool for diabetic peripheral neuropathy
   • DPN, TOC
   • Neuropathy, Diabetes, Screening
   • https://www.eur…rg/article/6092