Is Calcium 6.4 low, normal or dangerous? What does Calcium level 6.4 mean?

📅 Medical Review Date: September 1, 2025

Your Calcium level of 6.4 is a Low Calcium level.

Low Calcium levels may indicate underlying health problems. The normal range is typically between 8.5 mg/dL and 10.1 mg/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 Calcium range for men is :8.5 - 10.1 mg/dL

Ideal values of Calcium depending on age (male) :

Age	Ideal Calcium value
<5 years	9.044
5-10 years	9.623
10-15 years	9.584
15-20 years	9.544
20-25 years	9.505
25-30 years	9.466
30-35 years	10.072
35-40 years	10.031
40-45 years	9.99
45-50 years	9.949
50-55 years	9.908
55-60 years	9.867
60-70 years	9.826
70-80 years	9.786
80-90 years	9.746
90-100 years	9.706
>100 years	9.666

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

Get Advice via Email : Send us your blood test report, and our Calcium experts will review it. You'll receive a detailed analysis and personalized treatment guidance via email within 12 hours. If you have additional blood test results besides Calcium, please include those too—an accurate diagnosis often requires a full view of all abnormalities. Upload blood test report now

1,51,150

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A video message on the treatment of your low Calcium level

If you want your blood test report to be interpreted by Calcium specialist, you can upload your report. Our Calcium expert will provide you with the most accurate interpretation of your blood test results and treatment within 12 hours.Upload blood test report now

Some examples of conditions that increase or decrease Calcium levels include:

• Overactive parathyroid glands
• Some Medications like thiazide diuretics
• Kidney failure.
• Lung diseases
• Taking too much of vitamin D supplements

Receive world-class medical opinion about your low Calcium levels over email.Upload blood test report now

Normal range of Calcium found among women :8.5-10.1 mg/dL

Ideal values of Calcium depending on age (female) :

Age	Ideal Calcium value
<5 years	9.06
5-10 years	9.657
10-15 years	9.615
15-20 years	9.573
20-25 years	9.531
25-30 years	9.489
30-35 years	9.448
35-40 years	10.071
40-45 years	10.027
45-50 years	9.983
50-55 years	9.94
55-60 years	9.897
60-70 years	9.854
70-80 years	9.812
80-90 years	9.77
90-100 years	9.728
>100 years	9.685

If you take a Calcium blood test and the results are not in the normal range (8.5-10.1 mg/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 Calcium Test Is Done :

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

Medical References

• Cleveland Clinic – Calcium Blood Test: What It Is & Results
• MedlinePlus – Calcium Blood Test
• Mayo Clinic – Coronary calcium scan