Is Total serum iron 5 low, normal or dangerous? What does Total serum iron level 5 mean?

📅 Medical Review Date: January 4, 2026

Your Total serum iron level of 5 is a Low Total serum iron level.

A total serum iron level of 5 mcg/dL usually means there is not enough iron circulating in the blood. It suggests iron deficiency. Low levels of total serum iron can cause extreme fatigue, pale skin, weakness, shortness of breath, dizziness, cold hands and feet, and brittle nails. This can be caused by iron deficiency anemia, blood loss, poor diet, or pregnancy. Further tests are often needed to identify the cause and guide appropriate treatment.

Low Total serum iron levels may indicate underlying health problems. The normal range is typically between 40 mcg/dL and 190 mcg/dL. If your levels are outside this range, it's important to speak with a healthcare provider. Consulting a doctor is recommended to determine the cause and appropriate next steps.

The normal Total serum iron range for men is :40 - 190 mcg/dL

Ideal values of Total serum iron depending on age (male) :

Age	Ideal Total serum iron value
<5 years	42
5-10 years	44.1
10-15 years	46.305
15-20 years	48.62
20-25 years	51.051
25-30 years	53.604
30-35 years	56.284
35-40 years	59.098
40-45 years	62.053
45-50 years	65.156
50-55 years	68.414
55-60 years	71.835
60-70 years	75.427
70-80 years	79.198
80-90 years	83.158
90-100 years	87.316
>100 years	91.682

*Ideal values are calculated based on our database of patient records

Misdiagnosis is more common than people think—and the consequences can be serious. Delayed treatment, unnecessary medication, or worse. If you want a second opinion on your blood work, one option is to upload it to a site like wholebodyprotocol.com, where world-class doctors review your results. They charge a small fee—around $90 (though you'll want to check the latest price as it fluctuates)—and email you a detailed report. With over 12 million people affected by misdiagnosis every year, that little bit of extra peace of mind can go a long way.

Some examples of conditions that increase or decrease Total serum iron levels include:

• Anemia
• Your body doesn’t have enough healthy red blood cells
• Iron overload
• Iron poisoning
• Gastrointestinal blood loss

Normal range of Total serum iron found among women :40-190 mcg/dL

Ideal values of Total serum iron depending on age (female) :

Age	Ideal Total serum iron value
<5 years	42.06
5-10 years	44.226
10-15 years	46.504
15-20 years	48.899
20-25 years	51.417
25-30 years	54.065
30-35 years	56.849
35-40 years	59.777
40-45 years	62.856
45-50 years	66.093
50-55 years	69.497
55-60 years	73.076
60-70 years	76.839
70-80 years	80.796
80-90 years	84.957
90-100 years	89.332
>100 years	93.933

If you take a Total serum iron blood test and the results are not in the normal range (40-190 mcg/dL), your physician may recommend more tests to figure out the problem. You might also get this test if your physician thinks you have some other disease.

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How the Total serum iron Test Is Done :

When your doctor orders a Total serum iron test, it involves a straightforward blood draw to measure your Total serum iron levels. A pathologist or lab technician will take a small sample of blood from a vein using a needle. Your Total serum iron test results are usually available within a few hours.

Medical References

• MedlinePlus – Serum iron test
• Cleveland Clinic – Iron Blood Test: What It Is & Results
• NIH – Serum iron, ferritin, transferrin, total iron binding capacity

Total serum iron treatment - Click to read 10 GOLDEN ARTICLES on Anemia