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) Neisseria meningitidis Tetravalent Antibodies (Serogroups A, C, W-135 and Y), IgG Neurofibromatosis Type 1 (NF1) Deletion/Duplication Neurofibromatosis Type 1 (NF1) Sequencing Neurofibromatosis Type 1 (NF1) Sequencing and Deletion/Duplication Neurofilament by Immunohistochemistry 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