Is LDH 404 high, normal or dangerous? What does Lactate dehydrogenase level 404 mean?

📅 Medical Review Date: January 8, 2026

Your LDH level of 404 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	104.04
5-10 years	108.243
10-15 years	112.616
15-20 years	117.166
20-25 years	121.9
25-30 years	126.825
30-35 years	131.949
35-40 years	137.28
40-45 years	142.826
45-50 years	148.596
50-55 years	154.599
55-60 years	160.845
60-70 years	167.343
70-80 years	174.104
80-90 years	181.138
90-100 years	188.456
>100 years	188.149

*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	104.161
5-10 years	108.495
10-15 years	113.01
15-20 years	117.713
20-25 years	122.611
25-30 years	127.713
30-35 years	133.027
35-40 years	138.563
40-45 years	144.329
45-50 years	150.335
50-55 years	156.591
55-60 years	163.107
60-70 years	169.894
70-80 years	176.964
80-90 years	184.328
90-100 years	184.009
>100 years	183.69

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