Procollagen 3 (P3NP)
Category | Biochemistry |
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Test background |
The amino-terminal peptide of type 3 procollagen (P3NP) is formed during the synthesis of type 3 collagen. Serum P3NP is used as a marker for hepatic fibrosis in patients on long-term, low-dose methotrexate. |
Clinical Indications |
Monitoring of patients receiving low-dose methotrexate therapy. |
Reference range | See report |
Sample & container required | SST (gold top) or serum (red top) |
Sample volume | 0.5 mL |
Turnaround time | Up to 2 weeks |
Notes | Not currently performed in house; this is a referred test. |