| RFR | rapid fluid resuscitation; refraction |
|---|---|
| RTF | resistance transfer factor; respiratory tract fluid |
| SACSF | subarachnoid cerebrospinal fluid |
| SFA | saturated fatty acid; seminal fluid assay; serum folic acid; stimulated fibrinolytic activity; super... |
| SFC | soluble fibrin complex; soluble fibrin-fibrinogen complex; spinal fluid count |