GGT

A gamma-glutamyl transferase (GGT) test measures the amount of GGT in your blood GGT is an enzyme. Enzymes are proteins that speed up certain chemical reactions in your body. Thousands of enzymes play an important role in all of your body functions. The GGT enzyme is found throughout your body, but it is mainly found in your liver.

Source: MedlinePlus, U.S. National Library of Medicine

Normal range

22 published ranges, each from a named source

861 U/L drawn: male, 18 y+ · Mayo Clinic Laboratories (Test Catalog)

Female · 18 y+: 5–36 U/L
Female: 8–40 U/L
Male · 18 y+: 8–61 U/L
Male: 9–50 U/L

Ranges from American Board of Internal Medicine (Laboratory Test Reference Ranges), Mayo Clinic Laboratories (Pediatric Test Catalog), Mayo Clinic Laboratories (Test Catalog).

All source ranges (22)

Source	Sex	Age	Range
American Board of Internal Medicine (Laboratory Test Reference Ranges)	Female	all ages	8–40 U/L
American Board of Internal Medicine (Laboratory Test Reference Ranges)	Male	all ages	9–50 U/L
Mayo Clinic Laboratories (Test Catalog)	Female	≤ 11 mo	<178 u/L
Mayo Clinic Laboratories (Pediatric Test Catalog)	Female	≤ 11 mo	<178 u/L
Mayo Clinic Laboratories (Test Catalog)	Female	1 y – 6 y	<21 u/L
Mayo Clinic Laboratories (Pediatric Test Catalog)	Female	1 y – 6 y	<21 u/L
Mayo Clinic Laboratories (Test Catalog)	Female	7 y – 12 y	<24 u/L
Mayo Clinic Laboratories (Pediatric Test Catalog)	Female	7 y – 12 y	<24 u/L
Mayo Clinic Laboratories (Test Catalog)	Female	13 y – 17 y	<26 u/L
Mayo Clinic Laboratories (Pediatric Test Catalog)	Female	13 y – 17 y	<26 u/L
Mayo Clinic Laboratories (Test Catalog)	Female	18 y+	5–36 U/L
Mayo Clinic Laboratories (Pediatric Test Catalog)	Female	18 y+	5–36 U/L
Mayo Clinic Laboratories (Test Catalog)	Male	≤ 11 mo	<178 u/L
Mayo Clinic Laboratories (Pediatric Test Catalog)	Male	≤ 11 mo	<178 u/L
Mayo Clinic Laboratories (Test Catalog)	Male	1 y – 6 y	<21 u/L
Mayo Clinic Laboratories (Pediatric Test Catalog)	Male	1 y – 6 y	<21 u/L
Mayo Clinic Laboratories (Test Catalog)	Male	7 y – 12 y	<24 u/L
Mayo Clinic Laboratories (Pediatric Test Catalog)	Male	7 y – 12 y	<24 u/L
Mayo Clinic Laboratories (Test Catalog)	Male	13 y – 17 y	<43 u/L
Mayo Clinic Laboratories (Pediatric Test Catalog)	Male	13 y – 17 y	<43 u/L
Mayo Clinic Laboratories (Test Catalog)	Male	18 y+	8–61 U/L
Mayo Clinic Laboratories (Pediatric Test Catalog)	Male	18 y+	8–61 U/L

What an abnormal result can be associated with

A high result: Elevated gamma-glutamyltransferase level

Associations from LOINC2HPO (Human Phenotype Ontology). This is reference information, not a diagnosis: only a clinician can interpret your result in context.

details

Sample: Serum or plasma · LOINC
Collection: Serum gel tube · 0.5 mL · Mayo Clinic Laboratories (Test Catalog)
Part of: Bryan Johnson Blueprint
Listed under: Alcohol Use Disorder (AUD) · Bile Duct Diseases · Cirrhosis · Gallbladder Cancer · Hemochromatosis · Hepatitis · Hepatitis A · Hepatitis B · Hepatitis C · Jaundice · Liver Cancer · Liver Diseases
Code: LOINC 2324-2 · U/L
Also known as: Gamma glutamyl transferase, GGT, GGTP, Gamma-GTP, GT

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