| PRBC | packed red blood cells; placental residual blood volume |
|---|---|
| PRC | packed red cells; peer review committee; phase response curve; plasma renin concentration; professio... |
| PRCA | pure red cell aplasia |
| QR | quality review; quantity is correct [Lat. quantum rectum]; quieting response; quinaldine red |
| rbc | red blood cell |
| RG | red gastrocnemius |
|---|---|
| R-G | red-green |
| SRC | sheep red cell |
| TNP-SRBC | trinitrophenylated sheep red blood cell |