5’Nucleotidase Neurokinin A (Substance K) (INACTIVE as of 04/06/15) N Antigen Typing – Patient Neuron Specific Enolase Naproxen, Serum or Plasma Neuron Specific Enolase, CSF Naproxen, Urine Neuron Specific Enolase, Polyclonal (NSE P) by Immunohistochemistry Napsin A by Immunohistochemistry Neuronal Cell Antibodies Quantitative, Serum Narcolepsy (HLA-DQB1*06:02) Genotyping Neuronal Cell Antibodies, CSF Natalizumab Antibodies Neuronal Nuclear Antibodies (Hu, Ri, Yo) IgG by Immunoblot Natural Killer Cell Panel (Inactive as of 11/14/16. Refer to 2013805 in the November Hot Line) Neuronal Nuclei (NeuN) by Immunohistochemistry Natural Killer Cells Enumeration Neutrophil Oxidative Burst Assay (DHR) Neisseria gonorrhoea Antibodies, Total Neisseria gonorrhoeae by Transcription-Mediated Amplification (TMA)