Is Serum TIBC 40 low, normal or dangerous? What does Serum TIBC level 40 mean?

📅 Medical Review Date: April 17, 2026

Your Serum TIBC level of 40 is a Low Serum TIBC level.

Low Serum TIBC levels may indicate underlying health problems. The normal range is typically between 45 umol/L and 70 umol/L. 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 Serum TIBC range for men is :45 - 70 umol/L

Ideal values of Serum TIBC depending on age (male) :

Age	Ideal Serum TIBC value
<5 years	46.8
5-10 years	48.672
10-15 years	50.619
15-20 years	52.644
20-25 years	54.75
25-30 years	56.94
30-35 years	59.218
35-40 years	61.587
40-45 years	64.05
45-50 years	66.612
50-55 years	69.276
55-60 years	69.165
60-70 years	69.055
70-80 years	68.944
80-90 years	68.834
90-100 years	68.724
>100 years	68.614

*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.

Normal range of Serum TIBC found among women :45-70 umol/L

Ideal values of Serum TIBC depending on age (female) :

Age	Ideal Serum TIBC value
<5 years	46.854
5-10 years	48.784
10-15 years	50.794
15-20 years	52.887
20-25 years	55.066
25-30 years	57.335
30-35 years	59.697
35-40 years	62.157
40-45 years	64.718
45-50 years	67.384
50-55 years	67.269
55-60 years	67.154
60-70 years	69.921
70-80 years	69.803
80-90 years	69.685
90-100 years	69.567
>100 years	69.449

If you take a Serum TIBC blood test and the results are not in the normal range (45-70 umol/L), 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 Serum TIBC Test Is Done :

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

Medical References

• Cleveland Clinic – TIBC (Total Iron-Binding Capacity) Test
• WebMD – What to Know About Total Iron-Binding Capacity (TIBC) Test
• MedlinePlus – Total iron binding capacity
• PMC – Serum iron, ferritin, transferrin, total iron binding capacity