Everything else

Make it yours.

Tell it who you are and what else was on your test. Every line below, including the article, rewrites itself as you go.

HDL42
Triglycerides180
ApoB110
Every marker at once a PDF or a photo of the printout, read in seconds

add any marker from your test

Aspartate Aminotransferase (AST)mg/dL
Alanine Aminotransferase (ALT)mg/dL
Gamma-Glutamyl Transferase (GGT)mg/dL
28 U/L low
0 from your result
lownormalmildly elevatedelevated
10normal 30 to 121440
what this means

28 is low, just outside the range for ALP.

this is the average reading · make it yours below

This one sits close to the edge. Not a problem today, but it is the band where small changes decide which way it goes, and where the rest of your panel starts to matter more than this number alone.

You are 2 U/L under the normal floor of 30. That reads low.

28 is low. That is below the normal range for ALP. How much it matters depends on the markers it travels with, which is what the sections below are rewritten against.

recheck in 12 weeks

Your BloodMarker report · Alkaline Phosphatase (ALP)

Alkaline Phosphatase (ALP) 28 U/L: Is That Low?

Not really. 28 U/L is just outside the normal range for ALP.

But a number alone is only half the story. Your Aspartate Aminotransferase (AST), Alanine Aminotransferase (ALT) and your risk factors decide how much it means. Tell it who you are.

Reviewed against ALF, NIH, Mayo Clinic, AGA guidelines · Last reviewed March 22, 2026

Have your results in hand?

Upload or photograph your blood test and see every marker explained in seconds. Free.

Upload my blood test

YOUR NUMBERS

What they say together.

Alkaline Phosphatase (ALP) is read as part of a set. Add the ones printed next to it on your test and the figures below work themselves out, with the ranges this page uses for each.

U/L
U/LexampleNORMAL
U/LexampleNORMAL
U/LexampleRAISED
34 ÷ 38 =0.9AST to ALT ratio, the De Ritis ratio. Under 1 is the usual fatty-liver pattern; above 2 points at alcohol.
62 and 381.6GGT against ALT. GGT rising faster than ALT is the pattern that separates alcohol and bile flow from fat in the liver.
Read my whole panel →

Every marker on your test, read against your age and sex. Free.

Is Alkaline Phosphatase (ALP) 28 U/L Low, Normal, or High?

Alkaline Phosphatase (ALP) 28 U/L might be considered on the lower end of what is often seen as a typical range for many adults. While a single number doesn't tell the whole story, this level is generally not seen as high.

For some individuals, depending on age, gender, and other health factors, it might even fall within a normal expected window. Understanding where your ALP level stands can be a valuable piece of your personal health puzzle, inviting a deeper look into what influences this important enzyme.

what this page cannot tell you

ALP elevated with normal ALT points to bone disease or bile duct issues, not liver cell damage. Very different diagnosis.

This page has not been given your ALT, so it cannot tell you which of those you are. It is describing the average reader with Alkaline Phosphatase (ALP), not you.

Read mine against my ALT →

An Alkaline Phosphatase (ALP) level of 28 U/L, sitting just below the typical reference range of 30-120 U/L, clinically signals a mildly decreased enzyme activity that warrants attention. While high ALP is often associated with liver or bone issues, a low level like 28 U/L can point towards different underlying factors, though it's less commonly encountered.

Specific likely causes at this exact mild reduction might include subtle nutritional deficiencies, particularly in zinc or magnesium, as ALP is a zinc-dependent enzyme. Occasionally, subclinical hypothyroidism or the influence of certain medications, such as some oral contraceptives, could also contribute to this slight dip.

To accurately understand the cause, typical follow-up steps often involve a repeat ALP test to confirm the finding, alongside a review of your current medications and a detailed discussion of your dietary intake.

Your doctor might also recommend further blood work, such as a zinc or magnesium panel, or thyroid function tests to rule out specific deficiencies or conditions. A crucial detail many patients find reassuring is that an isolated, mildly low ALP reading of 28 U/L, especially without other concerning symptoms or abnormal lab values, doesn't automatically signify severe disease.

Instead, it often prompts a focused exploration into potential dietary gaps or a review of less impactful physiological variations. The aim is to identify and address any correctable factors, ensuring your body's systems are optimally supported.

The liver and Alkaline Phosphatase (ALP) LIVER Produces Alkaline Phosphatase (ALP) Blood supply Bile output Elevated Alkaline Phosphatase (ALP) may indicate liver cell damage or stress
for your numbersThe section below is written for 28 against a general adult target. What 28 means for you depends on the rest of your lipids and your other risk factors. Your report starts from your whole picture, not one line.

Hidden Risk of Alkaline Phosphatase (ALP) 28 U/L

While an Alkaline Phosphatase (ALP) level of 28 U/L is often not a sign of a serious underlying issue, especially for many adults, it can prompt a thoughtful consideration of various factors that influence this enzyme.

Rarely, very low ALP levels can be associated with certain nutritional influences or conditions. It's important to remember that ALP plays a role in bone, liver, and digestive system function, and these systems are intricately connected to our overall well-being.

For example, some nutrient deficiencies, like a lack of zinc, or certain health conditions might influence ALP levels. However, it's crucial to understand that a level like 28 U/L is frequently found in healthy individuals and does not automatically point to a problem.

The focus here is on understanding potential influences rather than alarming conclusions, which is why a holistic view of your health is always encouraged. This number is a gentle invitation to consider broad health influences, not a definitive diagnosis.

what this page cannot tell you

Both elevated together strongly suggests bile duct obstruction or cholestatic liver disease.

This page has not been given your Total Bilirubin, so that half of the picture is missing here. It is describing the average reader with Alkaline Phosphatase (ALP), not you.

Read mine against my Total Bilirubin →

A low alkaline phosphatase level, such as 28 U/L, particularly 7% below the normal threshold, can indicate a reduced ability of the body to handle bone mineralization effectively. This mild but significant deficiency might subtly impair osteoblast activity, potentially leading to a slower rate of bone turnover.

Over time, this can contribute to a slightly increased risk of developing osteomalacia, a condition characterized by soft bones due to inadequate vitamin D and phosphate levels, though severe manifestations are unlikely at this precise level.

It also might suggest issues with nutrient absorption critical for bone health, even without overt symptoms.

for your numbersThe risk below is the average one for this ALP. Whether it applies to you depends on the rest of your panel, which the article has not been given. Add them and this stops describing strangers.
  • **Nutritional Balance**: Ensuring adequate intake of essential minerals.
  • **General Well-being**: Reflecting on overall health and bodily processes.

This part is about the number

Everything below explains what raises Alkaline Phosphatase (ALP). It cannot tell you which of them is yours.

Your test can. Every marker on it is read against every other one, which is where the answer actually lives.

PDF or a photo of the printout · read in seconds

What Does a Alkaline Phosphatase (ALP) Level of 28 U/L Mean?

Alkaline Phosphatase (ALP) is an enzyme, which is a type of protein that helps speed up chemical reactions in the body. It’s found in many parts of your system, with the most significant amounts typically located in your bones, liver, kidneys, and digestive tract.

When we talk about Alkaline Phosphatase (ALP) 28 U/L, we are referring to the activity level of this enzyme. For example, in bones, ALP is crucial for bone formation and growth.

In the liver, it's involved in breaking down substances. A level like 28 U/L often suggests that these systems are functioning within a range where ALP activity is not notably elevated.

It can indicate healthy bone turnover in adults, or perhaps a lower rate of enzyme release from the liver. It's not uncommon for ALP levels to naturally vary throughout life, being higher during periods of rapid bone growth, such as childhood and adolescence.

For an adult, a level of 28 U/L typically suggests that the body's bone and liver functions related to ALP are operating at a relatively measured pace, often reflecting a state of general well-being rather than a heightened metabolic activity that would cause higher ALP numbers.

Understanding that ALP comes from different parts of the body helps in appreciating why its levels might shift and what a particular number like 28 U/L could generally signify about these bodily processes.

An alkaline phosphatase reading of 28 U/L is most plausibly linked to mild nutritional deficiencies, particularly inadequate intake of zinc and vitamin B6, which are cofactors for ALP activity. Hypophosphatasia, a rare genetic disorder affecting enzyme function, could present with very low levels, though this specific value is on the milder end.

Certain medications, such as hormone replacement therapies or those used to lower cholesterol, can also suppress ALP levels. Additionally, a diet severely restricted in protein or containing insufficient amounts of certain vitamins might contribute to this result.

Your ALP 28 means different things depending on your other markers

ALP + ALT
ALP elevated with normal ALT points to bone disease or bile duct issues, not liver cell damage. Very different diagnosis.
ALP + Total Bilirubin
Both elevated together strongly suggests bile duct obstruction or cholestatic liver disease.
ALP + Calcium
High ALP with elevated calcium can indicate hyperparathyroidism or bone metastases requiring imaging.
Upload your blood test, get your real plan back to normal →
for your numbersThis section lists every reason ALP moves, because on its own the number cannot say which is yours. The rest of your panel and a few risk factors would cross most of them off in a sentence.

Lifestyle Changes for Alkaline Phosphatase (ALP) 28 U/L

Maintaining a balanced lifestyle plays a significant role in supporting overall health, which in turn can influence various enzyme levels, including Alkaline Phosphatase (ALP). While no specific lifestyle change directly 'targets' an Alkaline Phosphatase (ALP) 28 U/L level, adopting healthy habits contributes to your body's optimal functioning.

Regular physical activity, for instance, is well-known for its benefits to bone health, cardiovascular fitness, and overall metabolic balance. Strong bones, supported by exercise, can indirectly influence ALP levels, as this enzyme is central to bone metabolism.

Similarly, managing stress effectively through practices like mindfulness, yoga, or spending time in nature can help regulate your body's internal environment. Chronic stress can impact various physiological systems, so reducing its burden supports general health.

Adequate sleep is another cornerstone of well-being, allowing your body to repair and regenerate. When your body is well-rested, its various enzymatic processes, including those involving ALP, tend to function more harmoniously.

These lifestyle adjustments create a foundation of health that helps all your bodily systems, including those involving enzymes like ALP, operate efficiently and within a healthy range, making the overall context of an Alkaline Phosphatase (ALP) 28 U/L reading more reassuring.

To address an alkaline phosphatase level of 28 U/L, it is advisable to schedule a follow-up test within 4-6 weeks, focusing on ensuring adequate hydration and avoiding strenuous activity for 24 hours prior.

Pay close attention to dietary intake, specifically increasing consumption of foods rich in zinc (e.g., oysters, beef, pumpkin seeds) and vitamin B6 (e.g., chicken breast, potatoes, bananas). Consider a trial of a high-quality multivitamin that includes these micronutrients.

If the low value persists or you experience any bone pain or unusual fatigue, a consultation with a rheumatologist or endocrinologist may be warranted for further investigation.

for your numbersThe portions below are generic because the page does not know your body. Add your height and weight above and the fibre targets resize to you at once, a small preview of what the full report does with every number.

Before you go

Want a nudge when it is time to check alkaline phosphatase (alp) again?

This page suggests retesting in 3 months. We will email you then, once, with what to compare against. Nothing else, ever.

One email, in 3 months. Unsubscribe in one click. We never store your results, only the marker name. Privacy

What you actually get

A page like this one, written about you.

You have just spent a few minutes reading a page written for a number. Upload your whole test and you get the same thing written for your body: every marker read against every other, in the order they should be fixed, as something you read rather than a dashboard you have to decode.

  • Read in orderWhich number to deal with first, and which ones are only following it.
  • Written, not chartedThe same voice as this page, about your own blood, on your own page.
  • Every retest joins itThe line builds itself, so the next version shows what moved.

Sources

Disclaimer: This content is for informational purposes only and is not medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about your health. BloodMarker does not establish a doctor-patient relationship. Terms & Conditions
Upload my test