| Test name | Alternative name for |
|---|
| Anti Reticulin antibodies | |
| Anti-Neuronal antibodies | |
| Anti-NMO IgG Antibody | |
| Chymotrypsin Faeces | |
| Cytology - Sputum | |
| Cytology - Tzanck Smear | |
| Fusidic acid level | |
| Klebsiella serology | |
| Leprosy IgM | |
| Listeria Serology | |
| N-Telopeptides Urine | |
| NA | Sodium |
| Naegleria Isozyme speciation | |
| Nail Clippings for Fungi | |
| NARP Gene | |
| NAT Testing (HIV HCV HBV) | Nucleic Acid Testing (HIV-1, HCV, HBV) |
| Naïve & Memory T cells | |
| NBT test | Neutrophil Function Test |
| Neisseria gonorrhoeae culture | Gonorrhoea Culture - non genital |
| Neisseria meningitidis by PCR | |
| Nelfinavir | |
| Neonatal Hypoglycaemia Investigations | |
| Neopterin | |
| Nerve Biopsy | |
| Netilmicin | |
| Neurofilament Light | Alzheimer Disease (Blood) |
| Neuronal Ab | Anti-Neuronal antibodies |
| Neurone Specific Enolase | |
| Neurontin | Gabapentin |
| Neutrophil Antibodies | Granulocyte Antibodies |
| Neutrophil Cytoplasmic antibodies | Anti Neutrophil Cytoplasmic antibody |
| Neutrophil Function Test | |
| Neutrophil oxidative burst | Neutrophil Function Test |
| Neutrophil phagocytosis | Neutrophil Function Test |
| neutrophil ros | Neutrophil Function Test |
| Nevirapine | |
| NfL | Alzheimer Disease (Blood) |
| NFT | Neutrophil Function Test |
| NGS Solid Tumour RNA Panel | RNA Fusion - Solid Tumour |
| NH3 | Ammonia |
| Niacin | Vitamin B3 (24 hr urine) |
| Nickel Urine (24hr) | |
| Nickel Urine Random | |
| nicotinic acid | Vitamin B3 (24 hr urine) |
| NIPA for Clinically Significant Fetal Antigens | Non-Invasive Prenatal Analysis (NIPA) for Fetal Antigens |
| Nipple Discharge Cytology | |
| NIPT | PERCEPT |
| NIPT for Fetal RHD | Rh-D NIPT |
| Nitrogen Excretion | Urinary Nitrogen Excretion |
| NMDA Receptor Antibody | |
| NMDAR | NMDA Receptor Antibody |
| NMDARCSF | NMDA Receptor Antibody |
| NMO IgG Antibody | Anti-NMO IgG Antibody |
| NMO IgG Antibody CSF | Anti-NMO IgG Antibody |
| Nocardia culture | |
| Non-Invasive Prenatal Analysis (NIPA) for Fetal Antigens | |
| Nor90 | Scleroderma Antibody Line Immunoassay |
| Noradrenaline | Catecholamines Blood |
| Normandy (Von Willebrand Factor) Gene Analysis | |
| Norovirus PCR | |
| Nortriptyline | Amitriptyline |
| Norwalk Virus PCR | Norovirus PCR |
| Nose culture | Swab for culture - superficial |
| NOTCH3 Mutation Testing | |
| Novel Coronavirus 2019 PCR | COVID-19 PCR |
| NPM1 mutant MRD | |
| NRAS mutation (tissue) | Molecular - Solid Tumour |
| NS1 Antigen | Dengue Virus Serology |
| NSE | Neurone Specific Enolase |
| NT5C1a | NT5C1A |
| NT5C1A | |
| NT5C1A Antibody | NT5C1A |
| NTBNP | Pro-Brain Natriuretic Peptide |
| NTX | N-Telopeptides Urine |
| Nucleic Acid Testing (HIV-1, HCV, HBV) | |
| Nuclosome Antibodies | Anti Nucleosome Ab |
| NUDT15 | TPMT Genotype |
| NXP2 | Anti Myositis antibodies |
| Pro-Brain Natriuretic Peptide | |
| RNA Fusion - Solid Tumour | |
| Sodium | |