There are multiple definitions:

1. noise power spectrum(English)

   • DQE

2. nasopharyngeal swab(English)

   • often preferred method for sample collection. Although saliva samples are less intrusive, the presence of mucus or even blood within saliva samples renders it more difficult to process in a laboratory
   • BAL, COVID-19, OPS
   • Diagnostics
   • https://doi.org…ldx.2021.04.005

3. nail patella syndrome(English)

   • an autosomal dominant condition with marked inter- and intrafamilial variability, affecting the nails, skeletal system, kidneys, and eyes. Skeletal features include absent or hypoplastic patellae, patella dislocations, elbow abnormalities, talipes, and iliac horns on xray. Kidney involvement may lead to renal failure. There is also a risk of glaucoma. Neurological and vasomotor symptoms are also part of the phenotype. Caused by loss of function mutations in the transcription factor LMX1B at 9q34
   • LMX1B
   • Congenital disorders, Musculoskeletal system, Gastroenterology, Ophthalmology, Nephrology, Neuropathy, Transcription
   • https://doi.org…36/jmg.40.3.153

4. new psychoactive substance(English)

   • GC-MS, LC-MS, MRM, MS, 3-MeO-PCP
   • Forensic medicine, Toxicology, Clinical chemistry
   • https://doi.org…int.2016.12.028

5. Naples prognostic score(English)

   • NPS-0, NPS-1, NPS-2, AEG, DFS, PNI, TNM, CONUT
   • Scoring systems/scales, Prognosis, Oncology
   • https://doi.org…-20230319-00084

6. nasal polyp score(English)

   • SNOT-22
   • ENT, Scoring systems/scales, Immunology
   • https://doi.org…390/jcm12134374