Is Alkaline phosphatase 28 low, normal or dangerous? What does ALP level 28 mean?

📅 Medical Review Date: November 16, 2025

Your Alkaline phosphatase level of 28 is a Low Alkaline phosphatase level.

Low Alkaline phosphatase levels may indicate underlying health problems. The normal range is typically between 30 U/L and 120 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 Alkaline phosphatase range for men is :30 - 120 U/L

Ideal values of Alkaline phosphatase depending on age (male) :

Age	Ideal Alkaline phosphatase value
<5 years	30.84
5-10 years	31.704
10-15 years	32.592
15-20 years	33.505
20-25 years	34.443
25-30 years	35.407
30-35 years	36.398
35-40 years	37.417
40-45 years	38.465
45-50 years	39.542
50-55 years	40.649
55-60 years	41.787
60-70 years	42.957
70-80 years	44.16
80-90 years	45.396
90-100 years	46.667
>100 years	47.974

*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 Alkaline phosphatase levels include:

• Alcohol abuse
• Ulcerative colitis
• Blockage of the bile ducts.
• Insulin resistance
• Congestive heart failure

Normal range of Alkaline phosphatase found among women :30-120 U/L

Ideal values of Alkaline phosphatase depending on age (female) :

Age	Ideal Alkaline phosphatase value
<5 years	30.865
5-10 years	31.755
10-15 years	32.671
15-20 years	33.613
20-25 years	34.582
25-30 years	35.579
30-35 years	36.605
35-40 years	37.661
40-45 years	38.747
45-50 years	39.864
50-55 years	41.014
55-60 years	42.197
60-70 years	43.414
70-80 years	44.666
80-90 years	45.954
90-100 years	47.279
>100 years	48.643

If you take a Alkaline phosphatase blood test and the results are not in the normal range (30-120 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 Alkaline phosphatase Test Is Done :

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

Medical References

• Cleveland Clinic – Alkaline Phosphatase (ALP): What It Is, Causes & Treatment
• Mayo Clinic – Alkaline phosphatase (ALP) blood test
• MedlinePlus – Alkaline Phosphatase
• WebMD – Alkaline Phosphatase (ALP): Tests and Results

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