AST test at home in Dubai
AST is found in the liver and in muscle. That makes it useful, and easy to misread: a hard leg session can raise it as much as a liver problem.
What the test measures
AST (Aspartate Aminotransferase). An enzyme found in the liver, skeletal muscle, heart and red blood cells, which rises in the blood when any of these tissues are under strain.
ALT and CPK on the same draw. ALT shows whether the liver is involved, and CPK, a muscle enzyme in the heart section of the screen, shows whether muscle is the more likely source.
Who should test
AST is part of every standard liver panel, but unlike ALT it is not specific to the liver. It is also released by muscle, so the result has to be read with the rest of the screen. Fatty liver, alcohol and some medicines can raise it. So can heavy weights, a long run, a new class or a muscle injury in the days before the draw.
The pattern matters more than the single number. When AST is raised with a normal ALT and a high CPK, muscle is the usual explanation. When AST is clearly higher than ALT and GGT is also raised, alcohol is a common cause. When ALT is the higher of the two, fatty liver is more typical.
- Heavy or unfamiliar training in the week before testing
- Regular alcohol, including weekend drinking
- Extra weight around the middle, or raised blood sugar
- Long-term medicine or several supplements
- A previous raised AST that was never explained
How to prepare
- Follow the fasting instructions for the full screen: an overnight fast with water only.
- Skip very hard or new types of training for 48 hours, as muscle strain raises AST and CPK.
- Avoid alcohol for at least 24-48 hours beforehand.
- Tell your consultant about any recent injury or race.
Reading your results
Units and ranges
AST is reported in units per litre (U/L). Upper limits often sit around the 30s to 40s U/L, but reference ranges vary by lab, so the result is read against the lab's own range.
If it comes back high
A mild rise is often linked with recent exercise, fatty liver or alcohol. If CPK is also high, muscle is the likely source and a recheck after a few rest days usually settles it. A large rise, or a rise with other abnormal liver results, needs follow-up with your own doctor.
If it comes back low
A low AST is rarely meaningful on its own. It is sometimes seen with low muscle mass or low vitamin B6 and is read alongside the rest of the screen.
Reference ranges differ between labs, and a single result is a snapshot. Your consultant reads every value against your history and the rest of the screen, not in isolation.
How the home test works
This test is part of Baseline’s full blood screen: 122 parameters across ten systems from one draw, for AED 850, with results in 48 hours. It is not sold as a single test, because the result means more next to everything else.
- Nurse comes to you. A licensed phlebotomist visits your home or office, 7 days a week, anywhere in the UAE.
- Accredited lab. Samples are processed by a CAP-accredited laboratory (College of American Pathologists), also accredited to ISO 15189, against clinical reference ranges.
- Reviewed with you. Results land in your account in Baseline format, and your consultant walks you through them on video, never a PDF dumped in your inbox.
Ranges are the lab’s own. Your consultant goes through what they mean with you.
Your results arrive in the Baseline app, every marker against the lab’s own range, checked by your consultant before you see them. The values above are an example.
Questions
- Why is my AST high when I feel fine?
- The most common reasons are recent hard training, fatty liver and alcohol. AST is also released by muscle, so a raised CPK on the same draw points towards exercise rather than the liver.
- What does the AST to ALT ratio mean?
- It compares the two enzymes. AST clearly higher than ALT is often linked with alcohol or muscle, while ALT higher than AST is more typical of fatty liver. It is a pattern to read, not a diagnosis on its own.
- How long should I rest from training before the test?
- Avoid very hard or new types of training for at least 48 hours. After a race or a very heavy session, AST and CPK can stay raised for several days.
- Can I book an AST test on its own?
- No. AST is part of the full 122-parameter screen and comes from the same home draw as every other marker.
Related tests
This page is general information, not a diagnosis. If you feel unwell, or your symptoms are new or getting worse, speak to a doctor.
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