MyBloodTest

Biomarkers

Home

›

Biomarkers

›

Iron (Fe)

Blood

Iron (Fe)

Also known as: Serum Iron, Fe Serum

COMMON RANGE

50 – 150

µg/dL

238

Mayo Clinic Laboratories

Adult Male

↗

See all sources ↓

CONVERT & COMPARE

µg/dL

17.9

µmol/L

100

mcg/dL

100

ug/dL

17.9

umol/L

17.9

mcmol/L

Reference ranges across 10+ sources

Adult reference ranges from 18 entries across 7 named sources, shown in µg/dL. Compare side-by-side.

SOURCE

SEX

AGE

RANGE

VISUAL

CITE

ARUP Laboratories

Male

≥18y

45 – 182 µg/dL

↗

ARUP Laboratories

Female

≥18y

28 – 170 µg/dL

↗

Mayo Clinic Laboratories

Male

≥18y

50 – 150 µg/dL

↗

Mayo Clinic Laboratories

Female

≥18y

35 – 145 µg/dL

↗

Labcorp

Male

≥18y

38 – 169 µg/dL

↗

Labcorp

Female

≥18y

27 – 159 µg/dL

↗

Quest Diagnostics

Male

≥18y

50 – 195 µg/dL

↗

Quest Diagnostics

Female

≥18y

40 – 190 µg/dL

↗

Nordic Reference Interval Project

All

≥18y

50 – 190 µg/dL

↗

JSCC / JAMT Japan

All

≥18y

40 – 188 µg/dL

NUMBER — Dutch Reference Value Study

Male

19y–51y

45 – 218 µg/dL

↗

NUMBER — Dutch Reference Value Study

Male

51y–66y

45 – 196 µg/dL

↗

NUMBER — Dutch Reference Value Study

Male

66y–81y

39 – 173 µg/dL

↗

NUMBER — Dutch Reference Value Study

Male

≥81y

45 – 162 µg/dL

↗

NUMBER — Dutch Reference Value Study

Female

19y–51y

39 – 196 µg/dL

↗

NUMBER — Dutch Reference Value Study

Female

51y–66y

45 – 168 µg/dL

↗

NUMBER — Dutch Reference Value Study

Female

66y–81y

45 – 168 µg/dL

↗

NUMBER — Dutch Reference Value Study

Female

≥81y

39 – 156 µg/dL

↗

ARUP Laboratories

Male · ≥18y

↗

45 – 182 µg/dL

ARUP Laboratories

Female · ≥18y

↗

28 – 170 µg/dL

Mayo Clinic Laboratories

Male · ≥18y

↗

50 – 150 µg/dL

Mayo Clinic Laboratories

Female · ≥18y

↗

35 – 145 µg/dL

Labcorp

Male · ≥18y

↗

38 – 169 µg/dL

Labcorp

Female · ≥18y

↗

27 – 159 µg/dL

Quest Diagnostics

Male · ≥18y

↗

50 – 195 µg/dL

Quest Diagnostics

Female · ≥18y

↗

40 – 190 µg/dL

Nordic Reference Interval Project

All · ≥18y

↗

50 – 190 µg/dL

JSCC / JAMT Japan

All · ≥18y

40 – 188 µg/dL

NUMBER — Dutch Reference Value Study

Male · 19y–51y

↗

45 – 218 µg/dL

NUMBER — Dutch Reference Value Study

Male · 51y–66y

↗

45 – 196 µg/dL

NUMBER — Dutch Reference Value Study

Male · 66y–81y

↗

39 – 173 µg/dL

NUMBER — Dutch Reference Value Study

Male · ≥81y

↗

45 – 162 µg/dL

NUMBER — Dutch Reference Value Study

Female · 19y–51y

↗

39 – 196 µg/dL

NUMBER — Dutch Reference Value Study

Female · 51y–66y

↗

45 – 168 µg/dL

NUMBER — Dutch Reference Value Study

Female · 66y–81y

↗

45 – 168 µg/dL

NUMBER — Dutch Reference Value Study

Female · ≥81y

↗

39 – 156 µg/dL

Ages 0–17 (CALIPER)

PEDIATRIC

3 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

0–14y

16 – 128 µg/dL

↗

CALIPER — Canadian Pediatric Reference Intervals

Female

14y–19y

20 – 162 µg/dL

↗

CALIPER — Canadian Pediatric Reference Intervals

Male

14y–19y

31 – 168 µg/dL

↗

CALIPER — Canadian Pediatric Reference Intervals

All · 0–14y

↗

16 – 128 µg/dL

CALIPER — Canadian Pediatric Reference Intervals

Female · 14y–19y

↗

20 – 162 µg/dL

CALIPER — Canadian Pediatric Reference Intervals

Male · 14y–19y

↗

31 – 168 µg/dL

About Iron (Fe)

Iron tests measure different substances in the blood to check iron levels in your body. Iron is a mineral that your body needs for growth and development. Your body uses iron to make hemoglobin, a protein in red blood cells. It carries oxygen from the lungs to all parts of the body. Iron is also important for healthy muscles, bone marrow, and organ function. Your body also needs iron to make some hormones.

You get iron from eating food or taking supplements. There are iron-only supplements, but many multivitamin/mineral supplements also contain iron.

The amount of iron you need each day depends on your age, your sex, and whether you consume a mostly plant-based diet. Iron levels that are too low or too high can cause health concerns. For example, not having enough iron in your body is the most common cause of anemia. Anemia is a condition in which your blood has a lower-than-normal amount of red blood cells.

Main source: MedlinePlus ↗

Useful for

Check if the iron levels in your blood are too low, a sign of anemia.

Diagnose different types of anemia.

Check if the iron levels in your blood are too high, which could be a sign of hemochromatosis.

Measure the amount of iron stored in your liver to check for liver disease.

Check for restless legs syndrome (tingling or burning feelings in your legs).

Check for adult Still disease, also called adult-onset Still disease or AOSD.

See if treatments for iron deficiency (low iron levels) or excess iron (high iron levels) are working.

Main source: MedlinePlus ↗

Interpretation

To understand the results of your iron test, your provider will consider your symptoms, age, medical history, and the results of other blood tests.

If one or more iron test results show your iron levels are too low, it may mean you have iron deficiency or iron deficiency anemia.

If one or more iron test results show your iron levels are too high, it may mean you have a condition such as hemochromatosis or another condition that causes excess iron.

Most conditions that cause too little or too much iron can be treated with iron supplements (for low iron), changes to your diet, medicines, and/or other therapies.

For general wellness information only. Talk to a clinician about your specific results.

Main source: MedlinePlus ↗

Track your iron (fe) in MyBloodTest

Instant lab report scanning, personalized wellness insights, automatic wellness app syncing. All in one app.

Download on the

App Store

Get it on

Google Play

Free · iOS · Android · Web

Related biomarkers

Often tested alongside iron (fe) 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

Labcorp

Quest Diagnostics

Nordic Reference Interval Project

JSCC / JAMT Japan

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.

MyBloodTest