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Aspartate Aminotransferase (AST)

Blood

Aspartate Aminotransferase (AST)

COMMON RANGE

8 – 48

U/L

178

Mayo Clinic Laboratories

Adult Male

↗

See all sources ↓

CONVERT & COMPARE

U/L

0.467

µkat/L

Reference ranges across 10+ sources

Adult reference ranges from 18 entries across 11 trusted sources, shown in U/L. Compare side-by-side.

SOURCE

SEX

AGE

RANGE

VISUAL

CITE

ARUP Laboratories

Male

≥18

10 – 40 U/L

↗

ARUP Laboratories

Female

≥18

10 – 35 U/L

↗

Mayo Clinic Laboratories

Male

≥18

8 – 48 U/L

↗

Mayo Clinic Laboratories

Female

≥18

8 – 43 U/L

↗

Quest Diagnostics

Male

≥18

10 – 40 U/L

↗

Quest Diagnostics

Female

≥18

10 – 35 U/L

↗

Labcorp

Male

≥18

0 – 40 U/L

↗

Labcorp

Female

≥18

0 – 32 U/L

↗

World Health Organization

All

≥18

10 – 40 U/L

↗

RCPA / AACB Australasian Harmonised Reference Intervals

Male

≥18

5 – 35 U/L

↗

RCPA / AACB Australasian Harmonised Reference Intervals

Female

≥18

5 – 30 U/L

↗

Nordic Reference Interval Project

Male

≥18

15 – 45 U/L

↗

Nordic Reference Interval Project

Female

≥18

15 – 35 U/L

↗

UK Pathology Harmony

All

≥18

10 – 40 U/L

JSCC / JAMT Japan

All

≥18

13 – 30 U/L

Turkey Nationwide Reference Intervals

All

≥18

10 – 40 U/L

NUMBER — Dutch Reference Value Study

Male

≥18

14 – 43 U/L

↗

NUMBER — Dutch Reference Value Study

Female

≥18

13 – 38 U/L

↗

ARUP Laboratories

Male · ≥18

↗

10 – 40 U/L

ARUP Laboratories

Female · ≥18

↗

10 – 35 U/L

Mayo Clinic Laboratories

Male · ≥18

↗

8 – 48 U/L

Mayo Clinic Laboratories

Female · ≥18

↗

8 – 43 U/L

Quest Diagnostics

Male · ≥18

↗

10 – 40 U/L

Quest Diagnostics

Female · ≥18

↗

10 – 35 U/L

Labcorp

Male · ≥18

↗

0 – 40 U/L

Labcorp

Female · ≥18

↗

0 – 32 U/L

World Health Organization

All · ≥18

↗

10 – 40 U/L

RCPA / AACB Australasian Harmonised Reference Intervals

Male · ≥18

↗

5 – 35 U/L

RCPA / AACB Australasian Harmonised Reference Intervals

Female · ≥18

↗

5 – 30 U/L

Nordic Reference Interval Project

Male · ≥18

↗

15 – 45 U/L

Nordic Reference Interval Project

Female · ≥18

↗

15 – 35 U/L

UK Pathology Harmony

All · ≥18

10 – 40 U/L

JSCC / JAMT Japan

All · ≥18

13 – 30 U/L

Turkey Nationwide Reference Intervals

All · ≥18

10 – 40 U/L

NUMBER — Dutch Reference Value Study

Male · ≥18

↗

14 – 43 U/L

NUMBER — Dutch Reference Value Study

Female · ≥18

↗

13 – 38 U/L

Ages 0–17 (CALIPER)

PEDIATRIC

6 age- and sex-stratified entries from the Canadian Laboratory Initiative on Pediatric Reference Intervals.

SOURCE

SEX

AGE

RANGE

VISUAL

CITE

CALIPER — Canadian Pediatric Reference Intervals

All

0–0.04

32 – 162 U/L

↗

CALIPER — Canadian Pediatric Reference Intervals

All

0.04–1

20 – 67 U/L

↗

CALIPER — Canadian Pediatric Reference Intervals

All

1–7

21 – 44 U/L

↗

CALIPER — Canadian Pediatric Reference Intervals

All

7–12

18 – 36 U/L

↗

CALIPER — Canadian Pediatric Reference Intervals

Female

12–19

13 – 26 U/L

↗

CALIPER — Canadian Pediatric Reference Intervals

Male

12–19

14 – 35 U/L

↗

CALIPER — Canadian Pediatric Reference Intervals

All · 0–0.04

↗

32 – 162 U/L

CALIPER — Canadian Pediatric Reference Intervals

All · 0.04–1

↗

20 – 67 U/L

CALIPER — Canadian Pediatric Reference Intervals

All · 1–7

↗

21 – 44 U/L

CALIPER — Canadian Pediatric Reference Intervals

All · 7–12

↗

18 – 36 U/L

CALIPER — Canadian Pediatric Reference Intervals

Female · 12–19

↗

13 – 26 U/L

CALIPER — Canadian Pediatric Reference Intervals

Male · 12–19

↗

14 – 35 U/L

Related biomarkers

Often tested alongside aspartate aminotransferase (ast) 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

ARUP Laboratories

Mayo Clinic Laboratories

Quest Diagnostics

Labcorp

World Health Organization

RCPA / AACB Australasian Harmonised Reference Intervals

Nordic Reference Interval Project

UK Pathology Harmony

JSCC / JAMT Japan

Turkey Nationwide Reference Intervals

NUMBER — Dutch Reference Value Study

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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