Alkaline phosphatase isoenzymes

This is an important test to help diagnose the source of high levels of ALP in the blood.

Venous blood
5 tests included
8 days turnaround



About Alkaline phosphatase isoenzymes

What are alkaline phosphatase enzymes?

Alkaline phosphatase (ALP) is an enzyme found throughout the body in tissues such as bones, intestines, bile ducts, the liver, and in the placenta of pregnant women. High ALP levels in your blood can be an indicator of conditions including liver diseases, bone diseases or blocked bile ducts. While ALP is found in many tissues, there are four versions of the enzyme, called isoenzymes, found in different tissues. If your ALP blood levels are high, discovering which isoenzyme is causing this reading provides information about the source of the problem. 

Disorders associated with elevated ALP levels include hyperthyroidism, liver damage, rapid bone growth, osteomalacia, bone tumours and biliary obstructions.

Why take the test?

This test identifies the source of high levels of ALP in the blood. It measures the total ALP, along with the levels of individual ALP isoenzymes which originate in different tissues in the body to determine the exact source of the problem.

What's tested


How it works



Purchase your Kit

Just order a test online and get your kit delivered right to your door unless you are ordering a COVID-19 Fit to Fly test where you will be given appointment options to attend our clinics across the United Kingdom for a nose and throat swab PCR test at the checkout stage.



Take your test and post

Follow our simple instructions to take your sample and post back the enclosed prepaid envelope to our accredited lab for processing. We also offer home or workplace visits by a qualified nurse. For COVID-19 Fit to Fly tests you must attend one of our partner clinics for our trained collection officers to take your sample. You will then have the results emailed to you.



Get results directly to your dashboard

You will receive an email notification from our medical team when your results are available on your secure personalised health dashboard.