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Gamma-Glutamyl Transferase (GGT)
Blood
Gamma-Glutamyl Transferase (GGT)
COMMON RANGE
8 – 61
U/L
0
240
M
Mayo Clinic Laboratories
Adult Male
↗
See all sources ↓
CONVERT & COMPARE
U/L
=
0.583
µkat/L
Reference ranges across 10+ sources
Adult reference ranges from 28 entries across 9 trusted sources, shown in U/L. Compare side-by-side.
SOURCE
SEX
AGE
RANGE
VISUAL
CITE
A
ARUP Laboratories
Male
≥18
8 – 61 U/L
↗
A
ARUP Laboratories
Female
≥18
5 – 36 U/L
↗
M
Mayo Clinic Laboratories
Male
≥18
8 – 61 U/L
↗
M
Mayo Clinic Laboratories
Female
≥18
5 – 36 U/L
↗
Q
Quest Diagnostics
Male
≥18
8 – 61 U/L
↗
Q
Quest Diagnostics
Female
≥18
5 – 36 U/L
↗
L
Labcorp
Male
≥18
8 – 65 U/L
↗
L
Labcorp
Female
≥18
5 – 36 U/L
↗
R
RCPA / AACB Australasian Harmonised Reference Intervals
Male
≥18
5 – 50 U/L
↗
R
RCPA / AACB Australasian Harmonised Reference Intervals
Female
≥18
5 – 35 U/L
↗
N
Nordic Reference Interval Project
Male
18–40
10 – 65 U/L
↗
N
Nordic Reference Interval Project
Male
40–60
12 – 80 U/L
↗
N
Nordic Reference Interval Project
Male
60–121
15 – 95 U/L
↗
N
Nordic Reference Interval Project
Female
18–40
10 – 35 U/L
↗
N
Nordic Reference Interval Project
Female
40–60
10 – 45 U/L
↗
N
Nordic Reference Interval Project
Female
60–121
12 – 55 U/L
↗
U
UK Pathology Harmony
Male
≥18
8 – 61 U/L
U
UK Pathology Harmony
Female
≥18
5 – 36 U/L
J
JSCC / JAMT Japan
Male
≥18
13 – 64 U/L
J
JSCC / JAMT Japan
Female
≥18
9 – 32 U/L
#
NUMBER — Dutch Reference Value Study
Male
19–51
9 – 102 U/L
↗
#
NUMBER — Dutch Reference Value Study
Male
51–66
11 – 117 U/L
↗
#
NUMBER — Dutch Reference Value Study
Male
66–81
10 – 110 U/L
↗
#
NUMBER — Dutch Reference Value Study
Male
81–121
8 – 105 U/L
↗
#
NUMBER — Dutch Reference Value Study
Female
19–51
6 – 62 U/L
↗
#
NUMBER — Dutch Reference Value Study
Female
51–66
7 – 90 U/L
↗
#
NUMBER — Dutch Reference Value Study
Female
66–81
8 – 91 U/L
↗
#
NUMBER — Dutch Reference Value Study
Female
81–121
7 – 89 U/L
↗
A
ARUP Laboratories
Male · ≥18
↗
8 – 61 U/L
A
ARUP Laboratories
Female · ≥18
↗
5 – 36 U/L
M
Mayo Clinic Laboratories
Male · ≥18
↗
8 – 61 U/L
M
Mayo Clinic Laboratories
Female · ≥18
↗
5 – 36 U/L
Q
Quest Diagnostics
Male · ≥18
↗
8 – 61 U/L
Q
Quest Diagnostics
Female · ≥18
↗
5 – 36 U/L
L
Labcorp
Male · ≥18
↗
8 – 65 U/L
L
Labcorp
Female · ≥18
↗
5 – 36 U/L
R
RCPA / AACB Australasian Harmonised Reference Intervals
Male · ≥18
↗
5 – 50 U/L
R
RCPA / AACB Australasian Harmonised Reference Intervals
Female · ≥18
↗
5 – 35 U/L
N
Nordic Reference Interval Project
Male · 18–40
↗
10 – 65 U/L
N
Nordic Reference Interval Project
Male · 40–60
↗
12 – 80 U/L
N
Nordic Reference Interval Project
Male · 60–121
↗
15 – 95 U/L
N
Nordic Reference Interval Project
Female · 18–40
↗
10 – 35 U/L
N
Nordic Reference Interval Project
Female · 40–60
↗
10 – 45 U/L
N
Nordic Reference Interval Project
Female · 60–121
↗
12 – 55 U/L
U
UK Pathology Harmony
Male · ≥18
8 – 61 U/L
U
UK Pathology Harmony
Female · ≥18
5 – 36 U/L
J
JSCC / JAMT Japan
Male · ≥18
13 – 64 U/L
J
JSCC / JAMT Japan
Female · ≥18
9 – 32 U/L
#
NUMBER — Dutch Reference Value Study
Male · 19–51
↗
9 – 102 U/L
#
NUMBER — Dutch Reference Value Study
Male · 51–66
↗
11 – 117 U/L
#
NUMBER — Dutch Reference Value Study
Male · 66–81
↗
10 – 110 U/L
#
NUMBER — Dutch Reference Value Study
Male · 81–121
↗
8 – 105 U/L
#
NUMBER — Dutch Reference Value Study
Female · 19–51
↗
6 – 62 U/L
#
NUMBER — Dutch Reference Value Study
Female · 51–66
↗
7 – 90 U/L
#
NUMBER — Dutch Reference Value Study
Female · 66–81
↗
8 – 91 U/L
#
NUMBER — Dutch Reference Value Study
Female · 81–121
↗
7 – 89 U/L
Ages 0–17 (CALIPER)
PEDIATRIC
4 age- and sex-stratified entries from the Canadian Laboratory Initiative on Pediatric Reference Intervals.
SOURCE
SEX
AGE
RANGE
VISUAL
CITE
C
CALIPER — Canadian Pediatric Reference Intervals
All
0–0.04
23 – 219 U/L
↗
C
CALIPER — Canadian Pediatric Reference Intervals
All
0.04–1
8 – 127 U/L
↗
C
CALIPER — Canadian Pediatric Reference Intervals
All
1–11
6 – 16 U/L
↗
C
CALIPER — Canadian Pediatric Reference Intervals
All
11–19
7 – 21 U/L
↗
C
CALIPER — Canadian Pediatric Reference Intervals
All · 0–0.04
↗
23 – 219 U/L
C
CALIPER — Canadian Pediatric Reference Intervals
All · 0.04–1
↗
8 – 127 U/L
C
CALIPER — Canadian Pediatric Reference Intervals
All · 1–11
↗
6 – 16 U/L
C
CALIPER — Canadian Pediatric Reference Intervals
All · 11–19
↗
7 – 21 U/L
Related biomarkers
Often tested alongside gamma-glutamyl transferase (ggt) or part of the same panel.
White Blood Cells (WBC)
Blood
Red Blood Cells (RBC)
Blood
Hemoglobin (Hgb)
Blood
Hematocrit (Hct)
Blood
Platelets (PLT)
Blood
Mean Corpuscular Volume (MCV)
Blood
Sources
A
ARUP Laboratories
M
Mayo Clinic Laboratories
Q
Quest Diagnostics
L
Labcorp
R
RCPA / AACB Australasian Harmonised Reference Intervals
N
Nordic Reference Interval Project
U
UK Pathology Harmony
J
JSCC / JAMT Japan
#
NUMBER — Dutch Reference Value Study
C
CALIPER — Canadian Pediatric Reference Intervals
Last updated 2026-05-02
This page aggregates publicly available reference data and clinical information from Mayo Clinic Laboratories and other sources. For general wellness information only — not medical advice. For diagnosis or treatment of any condition, talk to a qualified clinician.
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