Test name	Service category	Key Test
Gamma Spectroscopy - Iodine-131	Radiological Testing	Other
Gamma Spectroscopy - Radium-226 (R021)	Drinking Water Testing Services	Gamma
Gamma Spectroscopy - Thorium 232	Radiological Testing	Gamma
Gamma Spectroscopy - Uranium-234	Radiological Testing	Other
Gamma Spectroscopy - Zinc-65	Radiological Testing	Other
Gamma Spectroscopy - Zirconium-95	Radiological Testing	Other
GC (FID, MS, Pyrolysis)	Materials Testing Lab	Materials Characterization
GC-MS	Materials Testing Lab	Mechanical and Physical
GDS/OES	Materials Testing Lab	Mechanical and Physical
Gel Permeation Chromatography - D5296	Materials Testing Lab	Other
Geosmin and 2-Methyl-Isoborneol (MIB) (M617)	Microbiology Laboratory	Aquatic Microbiology
GERMAN VDI 3492 (Asbestos and Fibrous Glass by SEM)	Materials Testing Lab	Other
German VDI-3866 Part 5	Materials Testing Lab	Other
Giardia spp. (M149)	DNA and PCR Testing Laboratory	Other
GLOVE BOX (CHAMBER) STUDIES	Indoor Air Quality (IAQ) Lab Services	Other
Glutaraldehyde by NIOSH 2016M	Industrial Hygiene (IH) Lab Services	Other
Gluten (Gliadin) (F026)	Food and Beverage Testing	Allergens
Glycerol as PNOR by NIOSH 0500 or MWF NIOSH 5524	Industrial Hygiene (IH) Lab Services	Other
Glycol (Ethylene, Propylene) by GC 8015B	Environmental Chemistry Lab Services	Organics
Grain Boundaries and Structure	Materials Testing Lab	Mechanical and Physical
Gram Stain and Enumeration of Culturable Bacteria (M009 / M010 / M011)	Microbiology Laboratory	Bacteria
Gross Alpha Testing (R007 / R006)	Drinking Water Testing Services	Alpha
Gross Beta Testing (R008)	Radiological Testing	Beta
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