LabTestSuperstore.
Range Atlas

AI-collected, not medically reviewed. Compare source context, not your health status.

Choose the units printed on your report.

Gamma-glutamyl transferase (GGT): ranges and targets

5 sources / 6 ranges · U/L

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Categories and treatment goals are not interchangeable. Blank chart areas do not mean normal. Display values are rounded.

Shared scale (U/L)

03570

Laboratory reference intervals

UCSF Health

Source reference interval

United States · Any sex · adult

Adult GGT reference interval.

5 to 40 U/L

03570
Source details: UCSF Health, Source reference interval
Native values:
5 to 40 U/L
Context:
Adult GGT reference interval.
Population / collection / assay:
any; adult. Adult GGT reference interval. Any additional details not recorded here remain unspecified.
Source date/version:
Not recorded
Last verified in this pass:
Not rechecked. Recorded access: 2026-06-11.
Verification:
verified_numeric_source. Inherited extraction, not rechecked in the September 20 pass. Endpoint inclusion, source version and any context absent from the original record remain unverified.
Endpoint inclusion is not verified. A boundary label does not imply ≤ or ≥.
Locator:
Original source link and basis note
Read UCSF Health (new tab)

Univ. of Rochester Med. Center (male)

Source reference interval

United States · male · adult

Sex-specific male GGT reference interval.

7 to 47 U/L

03570
Source details: Univ. of Rochester Med. Center (male), Source reference interval
Native values:
7 to 47 U/L
Context:
Sex-specific male GGT reference interval.
Population / collection / assay:
male; adult. Sex-specific male GGT reference interval. Any additional details not recorded here remain unspecified.
Source date/version:
Not recorded
Last verified in this pass:
Not rechecked. Recorded access: 2026-06-11.
Verification:
verified_numeric_source. Inherited extraction, not rechecked in the September 20 pass. Endpoint inclusion, source version and any context absent from the original record remain unverified.
Endpoint inclusion is not verified. A boundary label does not imply ≤ or ≥.
Locator:
Original source link and basis note
Read Univ. of Rochester Med. Center (male) (new tab)

Univ. of Rochester Med. Center (female)

Source reference interval

United States · female · adult

Sex-specific female GGT reference interval.

5 to 25 U/L

03570
Source details: Univ. of Rochester Med. Center (female), Source reference interval
Native values:
5 to 25 U/L
Context:
Sex-specific female GGT reference interval.
Population / collection / assay:
female; adult. Sex-specific female GGT reference interval. Any additional details not recorded here remain unspecified.
Source date/version:
Not recorded
Last verified in this pass:
Not rechecked. Recorded access: 2026-06-11.
Verification:
verified_numeric_source. Inherited extraction, not rechecked in the September 20 pass. Endpoint inclusion, source version and any context absent from the original record remain unverified.
Endpoint inclusion is not verified. A boundary label does not imply ≤ or ≥.
Locator:
Original source link and basis note
Read Univ. of Rochester Med. Center (female) (new tab)

RCPA-harmonised (Australia, male)

Male upper reference limit

Australia · male · adult

Australian RCPA-harmonised GGT upper limit for men.

Upper boundary 60 U/L

03570

Arrow: continues beyond the displayed scale.

Source details: RCPA-harmonised (Australia, male), Male upper reference limit
Native values:
Upper boundary 60 U/L
Context:
Australian RCPA-harmonised GGT upper limit for men.
Population / collection / assay:
male; adult. Australian RCPA-harmonised GGT upper limit for men. Any additional details not recorded here remain unspecified.
Source date/version:
Not recorded
Last verified in this pass:
Not rechecked. Recorded access: 2026-06-11.
Verification:
verified_numeric_source. Inherited extraction, not rechecked in the September 20 pass. Endpoint inclusion, source version and any context absent from the original record remain unverified.
Endpoint inclusion is not verified. A boundary label does not imply ≤ or ≥.
Locator:
Original source link and basis note
Read RCPA-harmonised (Australia, male) (new tab)

Named clinician and other published views

Lamkin Clinic

Published view

United States · Any sex · adult

Functional-medicine optimal GGT ceiling (under 25 U/L).

Upper boundary 25 U/L

03570

Arrow: continues beyond the displayed scale.

Source details: Lamkin Clinic, Published view
Native values:
Upper boundary 25 U/L
Context:
Functional-medicine optimal GGT ceiling (under 25 U/L).
Population / collection / assay:
any; adult. Functional-medicine optimal GGT ceiling (under 25 U/L). Any additional details not recorded here remain unspecified.
Source date/version:
Not recorded
Last verified in this pass:
Not rechecked. Recorded access: 2026-06-11.
Verification:
verified_numeric_source. Inherited extraction, not rechecked in the September 20 pass. Endpoint inclusion, source version and any context absent from the original record remain unverified.
Endpoint inclusion is not verified. A boundary label does not imply ≤ or ≥.
Locator:
Original source link and basis note
Read Lamkin Clinic (new tab)

Optimal DX

Published view

United States · Any sex · adult

Functional-medicine optimal GGT band.

10 to 17 U/L

03570
Source details: Optimal DX, Published view
Native values:
10 to 17 U/L
Context:
Functional-medicine optimal GGT band.
Population / collection / assay:
any; adult. Functional-medicine optimal GGT band. Any additional details not recorded here remain unspecified.
Source date/version:
Not recorded
Last verified in this pass:
Not rechecked. Recorded access: 2026-06-11.
Verification:
verified_numeric_source. Inherited extraction, not rechecked in the September 20 pass. Endpoint inclusion, source version and any context absent from the original record remain unverified.
Endpoint inclusion is not verified. A boundary label does not imply ≤ or ≥.
Locator:
Original source link and basis note
Read Optimal DX (new tab)

Units change the display, not the source population or clinical purpose. Source-native values remain in each disclosure. No alternate conversion is offered for this marker.

Methodology, units and limitations

AI-collected source-comparison prototype. Not medically reviewed. Not a diagnostic tool. Reference intervals describe a source population; categories and treatment goals have different purposes. Named views do not establish a universal optimum. Country identifies a source, not a biological normal for everyone there.

Source counts use stable publisher IDs; one source may supply several legitimate categories. Source dates and recorded access dates are separate. Older rows explicitly marked not rechecked have not received a new source review. Missing age, fasting, assay and risk details are not inferred.

Strict < and > differ from inclusive ≤ and ≥. Approximate and unknown boundaries are labeled, not converted into exact cutoffs. Printed endpoint precision is preserved; gaps between source categories are not silently filled.

Bars show only the visible portion of each interval. Arrows indicate continuation; small intervals are not enlarged to imply a wider range. Display rounding does not change stored values. Numerically equivalent units do not change the numbers.

Personal-result entry is not available in this release. Do not enter health results into the marker finder. The tool does not classify you, recommend treatment or adjust ranges for your age.