Pediatric Test Reference Values
- N-Methylhistamine, Urine
- Natural Killer (NK) Cytotoxicity Profile
- Neonatal Bilirubin, Serum
- Nickel, 24 Hour, Urine
- Nickel, Random, Urine
- Nickel/Creatinine Ratio, Random, Urine
- Nitrogen, Total, 48, 72, or 96 Hours, Feces
- Nitrogen, Total, Urine
- NT-Pro B-Type Natriuretic Peptide (BNP), Serum
- NTX-Telopeptide, Urine


