| SF | Sabin-Feldman [test]; safety factor; salt-free; scarlet fever; screen film; seminal fluid; serosal f... |
|---|---|
| TF | free thyroxine; tactile fremitus; tail flick [reflex]; temperature factor; testicular feminization; ... |
| LNPF | lymph node permeability factor |
| TPF | thymus permeability factor; thymus to peak flow; true positive fraction |
| VPF | vascular permeability factor |