Is Fasting blood sugar 187 high, normal or dangerous? What does Glucose fasting level 187 mean?

📅 Medical Review Date: November 21, 2025

Your Fasting blood sugar level of 187 is a High Fasting blood sugar level.

A fasting blood sugar level of 187 mg/dL usually means the body is not using insulin properly. It suggests diabetes or prediabetes. High levels of fasting blood sugar can cause increased thirst, frequent urination, fatigue, blurred vision, dry mouth, slow-healing wounds, and recurrent infections. This can be caused by type 1 diabetes, type 2 diabetes, stress, or certain medications. Further tests are often needed to identify the cause and guide appropriate treatment.

High Fasting blood sugar levels may indicate underlying health problems. The normal range is typically between 74 mg/dL and 99 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 Fasting blood sugar range for men is :74 - 99 mg/dL

Ideal values of Fasting blood sugar depending on age (male) :

Age	Ideal Fasting blood sugar value
<5 years	75.384
5-10 years	76.794
10-15 years	78.23
15-20 years	79.693
20-25 years	81.183
25-30 years	82.701
30-35 years	84.248
35-40 years	85.823
40-45 years	87.428
45-50 years	89.063
50-55 years	90.728
55-60 years	92.425
60-70 years	94.153
70-80 years	95.914
80-90 years	97.708
90-100 years	97.674
>100 years	97.64

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

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Long-term complications of diabetes develop gradually. The longer you have diabetes the higher the risk of complications. Eventually, diabetes complications may be disabling or even life-threatening. Possible complications include:

• Kidney damage
• Eye damage
• Foot damage
• Alzheimer's disease
• Heart and blood vessel disease

Receive world-class medical opinion about your high Fasting blood sugar levels over email.Upload blood test report now

You can learn techniques to reduce high Fasting blood sugar levels by reading this 100 page eBook. This book is written by a patient himself and reviewed by the doctors of Medchunk. Read eBook here.

Normal range of Fasting blood sugar found among women :74-99 mg/dL

Ideal values of Fasting blood sugar depending on age (female) :

Age	Ideal Fasting blood sugar value
<5 years	75.425
5-10 years	76.878
10-15 years	78.359
15-20 years	79.868
20-25 years	81.406
25-30 years	82.974
30-35 years	84.572
35-40 years	86.201
40-45 years	87.861
45-50 years	89.553
50-55 years	91.278
55-60 years	93.036
60-70 years	94.828
70-80 years	96.654
80-90 years	98.516
90-100 years	98.48
>100 years	98.444

If you take a Fasting blood sugar blood test and the results are not in the normal range (74-99 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 Fasting blood sugar Test Is Done :

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

Medical References

• Cleveland Clinic – Fasting Blood Sugar: Testing, Levels & What They Mean
• MedlinePlus – Blood Glucose Test
• NIH – The A1C Test & Diabetes

Fasting blood sugar treatment - Click to read 10 GOLDEN ARTICLES on Diabetes