Is LDH 803 high, normal or dangerous? What does Lactate dehydrogenase level 803 mean?

📅 Medical Review Date: December 28, 2025

Your LDH level of 803 is a High LDH level.

High LDH levels may indicate underlying health problems. The normal range is typically between 100 U/L and 190 U/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 LDH range for men is :100 - 190 U/L

Ideal values of LDH depending on age (male) :

Age	Ideal LDH value
<5 years	108.03
5-10 years	116.705
10-15 years	126.076
15-20 years	136.2
20-25 years	147.137
25-30 years	158.952
30-35 years	171.716
35-40 years	185.505
40-45 years	184.309
45-50 years	183.121
50-55 years	181.941
55-60 years	180.768
60-70 years	179.603
70-80 years	178.445
80-90 years	177.294
90-100 years	176.151
>100 years	175.015

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

Misdiagnosis is more common than people think—and the consequences can be serious. Delayed treatment, unnecessary medication, or worse. If you want a second opinion on your blood work, one option is to upload it to a site like wholebodyprotocol.com, where world-class doctors review your results. They charge a small fee—around $90 (though you'll want to check the latest price as it fluctuates)—and email you a detailed report. With over 12 million people affected by misdiagnosis every year, that little bit of extra peace of mind can go a long way.

Some examples of conditions that increase or decrease LDH levels include:

• Acute kidney disease
• Acute liver disease
• Sepsis
• Infections such as infectious mononucleosis
• Pancreatitis

Normal range of LDH found among women :100-190 U/L

Ideal values of LDH depending on age (female) :

Age	Ideal LDH value
<5 years	108.271
5-10 years	117.226
10-15 years	126.922
15-20 years	137.42
20-25 years	148.786
25-30 years	161.092
30-35 years	174.416
35-40 years	188.842
40-45 years	187.55
45-50 years	186.267
50-55 years	184.993
55-60 years	183.728
60-70 years	182.471
70-80 years	181.223
80-90 years	179.984
90-100 years	178.752
>100 years	177.529

If you take a LDH blood test and the results are not in the normal range (100-190 U/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 LDH Test Is Done :

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

Medical References

• MedlinePlus – Lactate Dehydrogenase (LDH) Test
• Cleveland Clinic – LDH (Lactate Dehydrogenase) Test: What It Is & Results
• MedlinePlus – LDH isoenzyme blood test