Is Serum Calcium 1.23 low, normal or dangerous? What does Serum Calcium level 1.23 mean?

📅 Medical Review Date: February 12, 2026

Your Serum Calcium level of 1.23 is a Low Serum Calcium level.

Low Serum Calcium levels may indicate underlying health problems. The normal range is typically between 2.12 mmol/L and 2.62 mmol/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 Calcium range for men is :2.12 - 2.62 mmol/L

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

Age	Ideal Serum Calcium value
<5 years	2.146
5-10 years	2.172
10-15 years	2.199
15-20 years	2.226
20-25 years	2.253
25-30 years	2.281
30-35 years	2.309
35-40 years	2.337
40-45 years	2.366
45-50 years	2.395
50-55 years	2.424
55-60 years	2.454
60-70 years	2.484
70-80 years	2.515
80-90 years	2.546
90-100 years	2.577
>100 years	2.609

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

Get Advice via Email : Send us your blood test report, and our Serum 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 Serum Calcium, please include those too—an accurate diagnosis often requires a full view of all abnormalities. Upload blood test report now

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Normal range of Serum Calcium found among women :2.12-2.62 mmol/L

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

Age	Ideal Serum Calcium value
<5 years	2.147
5-10 years	2.174
10-15 years	2.202
15-20 years	2.23
20-25 years	2.258
25-30 years	2.287
30-35 years	2.316
35-40 years	2.345
40-45 years	2.375
45-50 years	2.405
50-55 years	2.435
55-60 years	2.466
60-70 years	2.497
70-80 years	2.529
80-90 years	2.561
90-100 years	2.593
>100 years	2.593

If you take a Serum Calcium blood test and the results are not in the normal range (2.12-2.62 mmol/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 Calcium Test Is Done :

When your doctor orders a Serum Calcium test, it involves a straightforward blood draw to measure your Serum Calcium levels. A pathologist or lab technician will take a small sample of blood from a vein using a needle. Your Serum 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
• WebMD – Calcium Blood Test: What It Is, Why It is Done, Results
• Mayo Clinic – Coronary calcium scan