| NPR | Natriuretic peptide receptor |
|---|---|
| NPR | Net Protein Ratio |
| NPR-A | Natriuretic peptide receptor A |
| NPR-B | Natriuretic peptide receptor-B |
| NPR-C | Natriuretic peptide receptor C |
| NPRM | Notice of Proposed Rule Making |
| NPRO | N-Nitrosoproline |
| npRQ | Non protein respiratory quotient |