(368 abbreviations)

N&M, nerves and muscles.

N&T, nose and throat.

N&V, nausea and vomiting.

N, asparagine.

N, Nitrogen.

N, normal (concentration of solution).

N, regional lymph node metastasis.

N/A, not applicable.

N/C, nucleocytoplasmic area ratio.

N/T, numbness and tingling.

N/V, nausea and vomiting.

N/V/D/C, nausea/vomiting/diarrhea/constipation.

NA, no abnormalities.

NA, not admitted.

NA, not applicable.

NA, not available.

Na, sodium.

NAA, no apparent abnormalities.

NAACCR, North American Association of Central Cancer Registries.

NAAOP, National Association for the Advancement of Orthotics & Prosthetics.

NABCO, National Alliance of Breast Cancer Organizations.

NABS, normoactive bowel sounds.

NaC, Na channels.

NAC, N-acetyl-L-cysteine.

NAC, nascent polypeptide associated complex.

NAC, nitrogen assimilation control protein.

NAC, non-amyloid component (of Alzheimer's disease amyloid), alpha-synuclein.

Nac, nucleus accumbens.

NaCl, sodium chloride.

NACP, non-amyloid-beta-component precursor (a.k.a. synuclein).

NAD, nicotinamide adenine dinucleotide.

NAD, no active disease.

NAD, no acute disease.

NAD, no acute distress.

NAD, no apparent distress.

NAD, nothing abnormal detected.

NADP, nicotinamide-adenine dinucleotide phosphate.

NADW, National Arthritis Data Workgroup.

Na-HOR, sodium hornan.

NAI, no acute infection.

NANA, N-acetylneuraminic acid.

NAON, National Association of Orthopaedic Nurses.

NAOT, National Association of Orthopaedic Technologists.

NAPRA, National Association of Pharmacy Regulatory Authorities.

NAR, narcotic.

NAR, no action required.

NARD, National Association of Retail Druggists.

NARD, Netherlands Centre for Monitoring of Adverse Reactions to Drugs.

NARD, no apparent respiratory distress.

NARD, nominal absorbed radiation dose.

NAS, National Academy of Sciences.

NASH, nonalcoholic steatohepatitis.

NASPEM, North American Society for Pediatric Exercise Medicine.

NASS, North American Spine Society (also: AAOS Related Organizations).

NAT, nucleic acid amplification testing.

NATA, National Athletic Trainers Association.

NaTT, sodium tetrathionate.

NB, nail bed.

NB, neuro Behçet.

NB, neuroblastoma.

NB, neurometric battery.

NB, newborn.

NB, nitrous oxide-barbiturate.

NB, normoblast.

NB, (Lat. nota bene) note well.

NB, nutrient broth.

NBI, no bone injury.

NBM, nothing by mouth.

NBP, non-invasive blood pressure.

NBS, normal breath sounds.

NBSS, The Canadian National Breast Screening Study.

NC, no change.

NC, no complaint.

NC, non-contributory.

NC, nuclear cytoplasmic (ratio).

NC/AT, normocephalic/atraumatic.

NCBI, National Center for Biotechnology Information (US).

NCC, National Competition Council (AU).

NCC, National Consumer Council (UK).

NCC, National Coordinating Center.

NCCF, National Childhood Cancer Foundation (USA).

NCCI, National Consultative Committee on Immunization.

NCCI, nervi corpori cardiaci interni.

NCCI, noncardiac cerebral ischemia.

NCCLS, National Committee for Clinical Laboratory Standards.

NCD, not considered disabling.

NCEP, National Cholesterol Education Program.

NCHS, National Center for Health Statistics.

NCI, National Cancer Institute (USA).

NCNS, no complications, no sequelae.

NCO, no complaints offered.

NCPP, National Collaborative Perinatal Project.

NCR paper, no carbon required paper.

NCR, no cardiac resuscitation.

NCRA, National Cancer Registrars Association (USA).

NCS, neocarzinostatin.

NCS, nerve conduction studies.

NCV, nerve conduction velocities.

NCV, non-cholera vibrios.

NCV, nuclear coefficient of variance.

ND, non distended.

ND, nondisabling.

NDA, new drug application.

NDF, neutral detergent fiber.

NDSAC, National Drug Scheduling Advisory Committee (Canada).

NE, nerve ending.

NE, neurologic examination.

NEC, necrotizing enterocolitis.

NEC, Nursing Education Coalition.

NECCR, North of England Children's Cancer Research Unit.

NED, no effort detected.

NED, no evidence of disease.

NEFA, non-esterified fatty acids.

neg, negative.

NEJM, New England Journal of Medicine.

NEO, neostigmine.

NEP, neutral endopeptidase 24.11.

NER, no evidence of recurrence.

NERD, no evidence of recurrent disease.

NETA, norethisterone acetate.

Neuro - neurology, neurological

NFP, neurofilament protein.

NFR, not for resuscitation.

NFRA, National Fibromyalgia Research Association (US).

NFs, neurofilaments.

ng, nanogram (millimicron) - 0.000000001 gram.

NG, N-G, nasogastric.

NGO, Non-Governmental Organization.

NGT, nasogastric tube.

NGU, nongonococcal urethritis.

NH, natural health.

NH, neurologic history.

NH, neuropsychiatric hospital.

NH, nursing home

NHANES, II, Second National Health and Nutrition Examination Survey.

NHANES, National Health and Nutrition Examination Survey.

NHIS, National Health Interview Survey.

NHL, non Hodgkin's lymphoma.

NHP, natural head position.

NHS, National Health Service.

NHSCR, National Health Service Central Registry (UK).

NIA, National Institute on Aging.

NIAMS, National Institute of Arthritis and Musculoskeletal and Skin Diseases (US).

NICU, neonatal intensive care unit.

NICU, neurointensive care unit.

NIDA, National Institute on Drug Abuse.

NIDDM, non insulin-dependent diabetes mellitus, type II.

NIDRR, National Institute on Disability and Rehabilitation Research.

NIF, negative inspiratory force.

NIH, National Institute of Health (US).

NII, neuronal intranuclear inclusion.

NIL, nothing.

NIMH, National Institute of Mental Health.

NIP, no infection present; no inflammation present.

NIPB, non-invasive blood pressure.

NIR, near infrared.

NIRS, Near Infrared Spectroscopy.

NIRVANA, NIR Vascular Advanced North American.

NISMAT, Nicholas Institute of Sports Medicine and Athletic Trauma.

NIV, non-invasive ventilation.

NK, natural killer cells (large lymphocytes, part of the immune system).

NK, not known.

NKA, no known allergies.

NKCA, National Kidney Cancer Association (USA).

NKD, no known disease.

NKDA, no known drug allergies.

NKHS, non-ketotic hyperosmolar syndrome.

NL, normal limits.

NL, normal.

NL/NP, non-lactating/non-pregnant.

NL/P, nonlactating/pregnant.

NLG, natural latex gloves.

NLG, nerve conduction velocities.

NLG, Nictitans lacrimal gland.

NLG, noreleagnine.

NLM, National Library of Medicine (part of NIH).

NLP, no light perception; normal light perception.

NLPHL, nodular lymphocyte predominant Hodgkin lymphoma.

NLS, nuclear localization signal.

NLT, not lower than.

NM, neuromuscular.

NM, nodular melanoma.

NM, not measured.

NM, not mentioned.

NMA, neurogenic muscular atrophy.

NMBA, neuromuscular blocking agent.

NMDA, N-methyl-D-aspartate.

NMdNM, N-methyl-1-deoxynojirimycin.

NMDP, National Marrow Donor Program.

NMJ, neuromuscular junction.

NMKI, Nordic Committee for Food Analysis.

NMR, nuclear magnetic resonance (scan).

NMS, neuroleptic malignant syndrome.

NMSC, non melanoma skin cancer.

nmSC, nonmyelinating Schwann cells.

NMSC, nonmyelin-forming Schwann cells.

NMSS, National Multiple Sclerosis Society.

NMT, not more than.

NMZL, nodal marginal zone b-cell lymphoma.

NN, neonatal; nerves; nurse notes.

NNFF, National Neurofibromatosis Foundation (USA).

NNP, 4-hydroxy-3.5-dinitrophenyl.

NNP, diabetic non-neuropathic.

NNP, neonatal nurse practitioners.

NNP, nerve net pulses.

NNP, N-nitroso-2-nitrophenacetin.

NNP, N-nitrosopiperidine.

NNP, N-nitrosopropranolol.

NNP, N-nitrosopyrrolidine.

NNP, non-histone nuclear proteins.

NNP, non-neoplastic pneumopathy.

NNP, nonneoplastic polyps.

NNP, non-pregnant normotensive women.

NNP, normal non-pregnant.

NNP, nose/nasopharynx.

NNP, sodium nitroprusside.

NNP-1, novel nuclear protein (HGMW-approved symbol D21S2056E).

NNPs, nerve net pulses.

NNR, not necessary to return.

NNT, number needed to treat.

NO, nitric oxide.

no, number.

NO₂, nitrogen dioxide.

NOAEL, no observable adverse effect level.

NOC, night.

NOD, non-obese diabetic.

NOEL, no observable effect level.

NOF, National Osteoporosis Foundation.

NOF, neck of femur.

NOHA, Nominal Ocular Hazard Area.

NOK, next of kin.

NONAS, number of non-aligned proximal tooth surfaces.

non-IgSF, non-Ig superfamily.

NONMEM, nonlinear mixed effect model.

NOP, no ocular pain; not otherwise provided for.

NORD, National Organization for Rare Disorders (USA).

NOS, nitric oxide synthase.

NOS, no organisms seen.

NOS, not on staff;

NOS, not otherwise specified.

NotI, restriction enzyme from Nocardia otitidis-cavarium.

NOV, Nederlandse Orthopaedisch Vereniging (Dutch Orthopaedic Association).

NP, nasopharynx; neuropathology; not palpable.

NP, nonpreferring (alcohol).

NP, nurse practitioner.

NPBE, non-protein-bound estradiol.

NPC, nasopharyngeal carcinoma.

NPC, no previous complaint

NPCMD, p-nitrophenoxycarbonyl methyl disulfide.

NPD, no pathologic diagnosis.

NPDL, nodular poorly differentiated lymphocytes.

NPH, neutral protamine Hagedorn - an intermediate acting insulin.

NPH, no previous history.

NPI, National Program of Immunization.

NPI-NH, neuropsychiatric inventory/nursing home.

NPN, nonprotein nitrogen (BUN and creatinine).

nPNA, normalized protein nitrogen appearance rates.

NPO MN, nothing by mouth after midnight.

NPO, nil per os - nothing by mouth.

NPP, National Population Policy.

NPT, normal pressure and temperature.

NPV, negative predictive value.

NQMI, non-Q-wave myocardial infarction.

NQWMI, non-Q-wave myocardial infarction.

NR, nerve root.

NR, not recommended.

NR, not remarkable.

NRBC, nucleated red blood cells.

NRC, National Research Council.

NRCS, Natural Resources Conservation Service.

NRCT, National Registry of Childhood Tumors (UK) held by the CCRG at Oxford.

NRI, nerve root involvement or irritation.

NRL, natural rubber latex.

NRM, normal range of motion.

NRN, no return necessary.

NROM, normal range of motion.

NRT, nicotine replacement therapy.

NRTI, nucleoside analogue reverse transcriptase inhibitors.

NS, nephrotic syndrome.

NS, nerves; neurosurgery; no show, nonspecific.

NS, nodular sclerosis (classical Hodgkin lymphoma).

NS, nonserrated cells (type of basal epidermal cells).

NS, normal saline (solution).

NS5A. nonstructural protein 5A.

NSA, no significant abnormalities.

NSAD, no sign of significant disease.

NSAID, non-steroidal anti-inflammatory drugs.

NSC, neurosecretory cells.

NSC, no significant change.

NSCIA, National Spinal Cord Injury Association.

NSCLC, non-small cell lung cancer.

NSD 2023, gamma-morpholino-butyrophenone (a monoamine oxidase inhibitor).

NSD 3004, 2-amino-4-phenylsulphonylbenzenesulphonamide.

NSD, N-acetylneuraminic acid (NANA) storage disorders.

NSD, Nairobi sheep disease.

NSD, nasal septal deformity.

NSD, neurosecretory dysfunction.

NSD, neurosensory deficit.

NSD, night shift dose.

NSD, nigrostriatal degeneration.

NSD, nitrofurazone soluble dressing.

NSD, no significant defect.

NSD, no significant differences.

NSD, no sleep deprivation.

NSD, nominal standard dose.

NSD, non surgical doctors.

NSD, nonsegmental defect.

NSD, non-soap detergent.

NSD, non-specific damage.

NSD, non-specific defense.

NSD, nonspecific dermatitis.

NSD, non-specific duodenitis.

NSD, non-sudden death.

NSD, nonsuicidal depressed.

NSD, nonsyndromic prelingual deafness.

NSD, normal sodium dialysate.

NSD, normal spontaneous delivery.

NSD, normal-coordinate structural decomposition.

NSD, normalized slope descriptors.

NSD, normalized spin density.

NSD, normalized standard deviation.

NSD, normal-salt diet.

NSD, normotensive sedentary.

NSD, number of step-down.

nsd-1, nonsusceptibility to DNV-1 (a recessive gene in the silkworm, Bombyx mori).

NSD-1015, 3,4-hydroxybenzyl-hydrazine dihydrochloride.

NSD-1055, aromatic L-amino acid decarboxylase (AADC) inhibitor.

nsd-2, nonsusceptibility to DNV-2 (a recessive gene in the silkworm, Bombyx mori).

NSDD-38, National Security Decision Directive-38.

NSE, neuron-specific enolase - a neural marker.

NSE, non-specific esterase.

NSF, no significant findings.

NSG, nursing.

NSH, National Health Service (UK).

NSHD, nodular sclerosing Hodgkin's disease.

NSHL, nodular sclerosis classical Hodgkin lymphoma.

NSI, no sign of infection, inflammation.

NSM, neurosecretory material.

NSMI, National Sports Medicine Institute of the United Kingdom.

NSR, non significant result.

NSR, normal sinus rhythm.

NSS, normal saline solution; normal size and shape.

NSVD, normal spontaneous vaginal delivery.

NSX, N4-acetylsulfisoxazole.

NSx, neonatally splenectomized (animals).

NT, naso-tracheal; nerve treatment; normal temperature; no test, not tested.

NT, non tender.

NT, normal range.

nt, nucleotide.

NTD, neural tube defect.

NTG, nitroglycerine.

NTLI, neurotensin-like immunoreactivity.

NTM, nontuberculous mycobacteria.

NTP, National Toxicology Program.

NTP, normal temperature and pressure.

NTS, nucleus tractus solitarius.

N-type, null type.

NUFIP, nuclear FMRP-interacting protein.

NV, nausea vomiting.

NV, neurovascular.

NVD, nausea, vomiting, diarrhea.

NVI, iris neovascularization.

NWB, non-weight bearing.

NWDA, National Wholesale Druggists' Association.

NWOTA, North West Orthopaedic Trainees Association

NXG, necrobiotic xanthogranuloma.

NYD, not yet diagnosed.

NYHA, New York Heart Association.