| HGPRT | Hypoxanthine-Guanine Phospho-Ribosyl Transferase |
|---|---|
| HPRT | Hypoxanthine Phospho-Ribosyl-Transferase |
| LCAT | Lecithin Cholesterol Acyl-Transferase |
| OCT | 1) Ornithine Carbamyl Transferase 2) Oxytocin Challenge Test |
| TDT, Tdt, TdT | Terminal deoxynucleotidal Transferase |