| Urine Reducing Substance |
| RBC MORPHOLOGY : |
| Rouleaux Formation |
| RDW |
| Reticulocyte |
| Retic/corrected |
| R.B.C |
| Random Urine Protein |
| RF |
| RF ( quantitative ) |
| R.P.R. |
| Rubella Ab (IgG) |
| Rubella Ab (IgM) |
| Rubella Ab-IgG (CSF) |
| Rubella Ab-IgM (CSF) |
| Rub Ab-IgG (Avidity) |
| Rubella Ab-IgM(capture) |
| Anti RNP Ab |
| RF Ab(IgG) |
| RF Ab(IgM) |
| Rubella |
| RNA-extraction |
| Renin (upright) |
| Renin (supine) |
| Risk asses curve |
| . RBC |
| Reducing Substance (Stool) |
| . RBC |
| . R.B.C |
| . Russell (DRVVT) |
| Roma index |
| RBP-4 |
| . RBC |
| . R.D.W-CV |
| . R.D.W-SD |
| Reticulocyte Production Index |
| R.B.C |
| . R.B.C |
| Anti Ro-52(52 KDa) |
| RET-proto oncogene |
| Rett (MECP2 gene) |
| RSV |
| SARS-CoV-2 Anti RBD-IgG |
| << Respiratory panel 1 -virus >> |
| RSV Ab (IgG) |
| RSV Ab (IgM) |
| Rickettsia prowazekii Ab (IgG) |
| Rickettsia prowazekii Ab (IgM) |