Test name	Service category	Key Test
Naegleria fowleri (M197)	DNA and PCR Testing Laboratory	Other
n-Amyl Acetate by NIOSH 1450 (Badge, Tubes)	Industrial Hygiene (IH) Lab Services	Other
Naphthalene by NIOSH 1501 / NIOSH 5506	Industrial Hygiene (IH) Lab Services	Other
Naturally Occurring Asbestos (NOA) - Community Air Monitoring Projects	Asbestos Lab Services	Environmental Monitoring
n-Butyl acetate by NIOSH 1450	Industrial Hygiene (IH) Lab Services	Other
n-Butyl alcohol (n-Butanol) by NIOSH 1401	Industrial Hygiene (IH) Lab Services	Other
Nevada DOT NOA/ Erionite Analysis	Asbestos Lab Services	Erionite
New Rug Odor (4-Phenylcyclohexene or 4-PC or 4-PCH) by CSI Method	Industrial Hygiene (IH) Lab Services	Other
n-Hexane by NIOSH 1500	Industrial Hygiene (IH) Lab Services	Other
Nickel (Ni)	Lead and Metals Lab Services
Nicotine (Bulk or Wipe) by NIOSH 2551M	Industrial Hygiene (IH) Lab Services	Other
Nicotine by NIOSH 2551	Industrial Hygiene (IH) Lab Services	Other
Nicotine by NIOSH 2551M	Industrial Hygiene (IH) Lab Services	Other
NIOSH 0500 (Nuisance Dust, Total) Air Type	Industrial Hygiene (IH) Lab Services	Other
NIOSH 0600 (Nuisance Dust, Respirable) Air Type	Industrial Hygiene (IH) Lab Services	Other
NIOSH 1550 - Total Hydrocarbons (as diesel/fuel oil#2) (Badge, Tubes)	Industrial Hygiene (IH) Lab Services	Other
NIOSH 5000 (Gravimetric analysis only for Carbon Black)	Materials Testing Lab	Fire Investigation
NIOSH 5000 (Includes TEM Confirmation)	Materials Testing Lab	Fire Investigation
NIOSH 7907 (Cassettes)	Industrial Hygiene (IH) Lab Services	Other
NIOSH 7908 (Cassettes)	Industrial Hygiene (IH) Lab Services	Other
NIOSH 9002	Indoor Air Quality (IAQ) Lab Services	Other
Nitrate as N	Environmental Chemistry Lab Services	Wet Chemistry
Nitric Acid by NIOSH 7903	Industrial Hygiene (IH) Lab Services	Other
Nitric Oxide by OSHA ID190M (Tubes)	Industrial Hygiene (IH) Lab Services	Other
Nitrifying Bacteria (N) (M127)	Microbiology Laboratory	Aquatic Microbiology
Nitrite as N	Environmental Chemistry Lab Services	Wet Chemistry
Nitrogen - Ammonia	Environmental Chemistry Lab Services	Wet Chemistry
Nitrogen - Nitrate	Environmental Chemistry Lab Services	Other
Nitrogen - Nitrate / Nitrite	Environmental Chemistry Lab Services	Other
Nitrogen - Organic	Environmental Chemistry Lab Services	Wet Chemistry
Nitrogen - Total Kjeldahl (TKN)	Environmental Chemistry Lab Services	Wet Chemistry
Nitrogen Dioxide (NO2) by OSHA ID-182	Industrial Hygiene (IH) Lab Services	Other
Nitrogen Dioxide/Nitrogen Oxide (NOX) by NIOSH 6014/OSHA ID 182	Industrial Hygiene (IH) Lab Services	Other
Nitrous Oxide by Assay Tech LP575 (Badge)	Industrial Hygiene (IH) Lab Services	Other
NJID 27 (WASTE CHARACTERIZATION)	Environmental Chemistry Lab Services	Other
NMR	Materials Testing Lab	Other
n-Octane by NIOSH 1500	Industrial Hygiene (IH) Lab Services	Other
Non Asbestos Respirable Fibers (NARF's)	Materials Testing Lab	Other
Non-Volatile Extraction	Environmental Chemistry Lab Services	Other
Noodles too soft	Materials Testing Lab	Other
n-Propyl Acetate by NIOSH 1450	Industrial Hygiene (IH) Lab Services	Other
n-Propyl Alcohol (n-Propanol) by NIOSH 1401	Industrial Hygiene (IH) Lab Services	Other
Nuisance Dust and PM-10 / TSP	Indoor Air Quality (IAQ) Lab Services	Other
Nutritional – Dairy/Processed Meat (F643)	Food and Beverage Testing	Chemistry
Nutritional – Database (F217)	Food and Beverage Testing	Chemistry
Nutritional – Fresh Meat/Fish (F644)	Food and Beverage Testing	Chemistry
Nutritional – Mandatory (F641)	Food and Beverage Testing	Chemistry
Nutritional – Pet Food (F625)	Food and Beverage Testing	Chemistry
Nutritional – Vegetable/Fruit (F642)	Food and Beverage Testing	Chemistry
Nutritional Labeling (F204)	Consumer Products Testing	Other
NY ELAP Method 198.1	Asbestos Lab Services	Asbestos in Bulk (Building Materials)
NY ELAP Method 198.1	Indoor Air Quality (IAQ) Lab Services	Other
NY ELAP Method 198.4 (TEM with Gravimetric Prep)	Indoor Air Quality (IAQ) Lab Services	Other
NY ELAP Method 198.4 (TEM with Gravimetric Prep)	Asbestos Lab Services	TEM Asbestos
NY ELAP Method 198.6 (PLM with Gravimetric Prep)	Asbestos Lab Services	PLM Asbestos
NY ELAP Method 198.6 (PLM with Gravimetric Prep)	Indoor Air Quality (IAQ) Lab Services	Other
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