Na
Nasal Discharge Culture (including fungi)
Na (sodium)
Natural Killer cell Count
NEFA
Neisseria gonorrhoeae Nucleic Acid Test
Neisseria Meningitidis PCR
Neisseria meningitidis Serology
Neopterin - CSF
Neopterin (for inborn errors)
Neopterin - serum
Neoral
Neuronal Antibodies *
Neuron Specific Enolase
Neurontin (trade name)
Neuropathy DNA Testing
Neutrophil Antibodies
Neutrophil Count
Neutrophil Cytoplasmic Antibodies (ANCA) *
Neutrophil Function Test
NH3
Niacin
Nicotine metabolite - blood
Nipple discharge
Nitrazepam
NMDA Receptor Antibodies
Non-esterified fatty acids (NEFA)
Non-HDL Cholesterol
Noradrenaline - plasma
Noradrenaline - urine
Normetanephrine - plasma
Normetanephrine - urine
Norovirus Antigen / PCR
Norovirus - faeces
Norovirus - faeces
Norpace
Nortriptyline
Norvir (trade name)
Norwalk virus
Nose Culture
NPM1 Mutation Testing
NSE
N-Telopeptide
NT-ProBNP