Is Serum Phosphorus 1.51 high, normal or dangerous? What does Serum Phosphorus level 1.51 mean?

📅 Medical Review Date: February 3, 2026

Your Serum Phosphorus level of 1.51 is a High Serum Phosphorus level.

High Serum Phosphorus levels may indicate underlying health problems. The normal range is typically between 0.97 mmol/L and 1.45 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 Phosphorus range for men is :0.97 - 1.45 mmol/L

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

Age	Ideal Serum Phosphorus value
<5 years	0.985
5-10 years	1
10-15 years	1.015
15-20 years	1.03
20-25 years	1.046
25-30 years	1.062
30-35 years	1.078
35-40 years	1.094
40-45 years	1.111
45-50 years	1.128
50-55 years	1.145
55-60 years	1.162
60-70 years	1.18
70-80 years	1.198
80-90 years	1.216
90-100 years	1.234
>100 years	1.253

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

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

1,51,150

Total number of patients treated

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Normal range of Serum Phosphorus found among women :0.97-1.45 mmol/L

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

Age	Ideal Serum Phosphorus value
<5 years	0.985
5-10 years	1
10-15 years	1.016
15-20 years	1.032
20-25 years	1.048
25-30 years	1.064
30-35 years	1.081
35-40 years	1.098
40-45 years	1.115
45-50 years	1.132
50-55 years	1.15
55-60 years	1.168
60-70 years	1.186
70-80 years	1.204
80-90 years	1.223
90-100 years	1.242
>100 years	1.261

If you take a Serum Phosphorus blood test and the results are not in the normal range (0.97-1.45 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 Phosphorus Test Is Done :

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

Medical References

• MedlinePlus – Phosphate in Blood
• WebMD – Phosphate Blood Test: Purpose, High vs. Low vs. Normal Levels
• Cleveland Clinic – Phosphorus: What It Is, Why You Need It & Blood Tests
• MedlinePlus – Phosphorus blood test