| DRF | Daily Rating Form; daily replacement factor; Deafness Research Foundation; dose reduction factor |
|---|---|
| FADH2 | reduced form of flavin adenine dinucleotide |
| FMNH, FMNH2 | reduced form of flavin mononucleotide |
| FPH2 | reduced form of flavin phosphate |
| F-SP | special form [Lat. forma specialis] |