Is Serum Cholesterol 5.51 high, normal or dangerous? What does Serum Cholesterol level 5.51 mean?

📅 Medical Review Date: February 13, 2026

Your Serum Cholesterol level of 5.51 is a High Serum Cholesterol level.

High Serum Cholesterol levels may indicate underlying health problems. The normal range is typically between 2.59 mmol/L and 5.15 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 Cholesterol range for men is :2.59 - 5.15 mmol/L

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

Age	Ideal Serum Cholesterol value
<5 years	2.733
5-10 years	2.884
10-15 years	3.043
15-20 years	3.211
20-25 years	3.388
25-30 years	3.575
30-35 years	3.772
35-40 years	3.98
40-45 years	4.199
45-50 years	4.43
50-55 years	4.674
55-60 years	4.932
60-70 years	4.917
70-80 years	4.902
80-90 years	4.887
90-100 years	4.872
>100 years	5.14

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

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Normal range of Serum Cholesterol found among women :2.59-5.15 mmol/L

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

Age	Ideal Serum Cholesterol value
<5 years	2.737
5-10 years	2.892
10-15 years	3.056
15-20 years	3.229
20-25 years	3.412
25-30 years	3.606
30-35 years	3.811
35-40 years	4.027
40-45 years	4.256
45-50 years	4.498
50-55 years	4.753
55-60 years	5.023
60-70 years	5.007
70-80 years	4.991
80-90 years	4.975
90-100 years	4.959
>100 years	4.943

If you take a Serum Cholesterol blood test and the results are not in the normal range (2.59-5.15 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 Cholesterol Test Is Done :

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

Medical References

• Mayo Clinic – Cholesterol test
• MedlinePlus – Cholesterol Levels
• Cleveland Clinic – Cholesterol: Understanding Levels & Numbers