Is Serum HDL cholesterol 1.8 high, normal or dangerous? What does Serum HDL cholesterol level 1.8 mean?

📅 Medical Review Date: February 13, 2026

Your Serum HDL cholesterol level of 1.8 is a High Serum HDL cholesterol level.

High Serum HDL cholesterol levels may indicate underlying health problems. The normal range is typically between 1 mmol/L and 1.5 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 HDL cholesterol range for men is :1 - 1.5 mmol/L

Ideal values of Serum HDL cholesterol depending on age (male) :

Age	Ideal Serum HDL cholesterol value
<5 years	1.018
5-10 years	1.036
10-15 years	1.055
15-20 years	1.074
20-25 years	1.093
25-30 years	1.113
30-35 years	1.133
35-40 years	1.153
40-45 years	1.174
45-50 years	1.195
50-55 years	1.217
55-60 years	1.239
60-70 years	1.261
70-80 years	1.284
80-90 years	1.307
90-100 years	1.331
>100 years	1.355

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

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Normal range of Serum HDL cholesterol found among women :1-1.5 mmol/L

Ideal values of Serum HDL cholesterol depending on age (female) :

Age	Ideal Serum HDL cholesterol value
<5 years	1.019
5-10 years	1.038
10-15 years	1.057
15-20 years	1.077
20-25 years	1.097
25-30 years	1.117
30-35 years	1.138
35-40 years	1.159
40-45 years	1.18
45-50 years	1.202
50-55 years	1.224
55-60 years	1.247
60-70 years	1.27
70-80 years	1.294
80-90 years	1.318
90-100 years	1.342
>100 years	1.367

If you take a Serum HDL cholesterol blood test and the results are not in the normal range (1-1.5 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 HDL cholesterol Test Is Done :

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

Medical References

• MedlinePlus – HDL test
• Cleveland Clinic – HDL: Why It is Good Cholesterol
• Mayo Clinic – Cholesterol test