| CHFD | controlled high flux dialysis |
|---|---|
| dB/dt | change of magnetic flux with time |
| FRS | Fellow of the Royal Society; ferredoxin-reducing substance; first rank symptom; furosemide |
| FU | fecal urobilinogen; fetal urobilinogen; fluorouracil; follow-up; flux unit [ion]; fractional urinaly... |
| LDF | laser Doppler flux, laser Doppler fluxometry; limit dilution factor |