What Blood Tests Do I Need Before Taking Isotretinoin?

Isotretinoin is a tablet, taken for around four to six months and is one of the most effective treatments we have for severe or persistent acne as it actually shrinks the oil glands. However, it does require careful monitoring. Before starting treatment, blood tests are essential to ensure that it is safe and appropriate for you.

Why are blood tests needed?

Isotretinoin works by reducing oil production and inflammation in the skin, but it can also affect other systems in the body. Blood tests allow us to assess your overall health and identify any potential risks before treatment begins.

The main areas we look at are liver function and lipid levels. Isotretinoin is processed through the liver, so it is important to ensure that your liver enzymes are within a normal range. It can also increase cholesterol and triglyceride levels, which is why these are checked before and during treatment.

For those of childbearing age, pregnancy testing is also a critical part of the process before starting treatment. Isotretinoin can cause serious harm to a developing foetus, so strict precautions are always taken.

What happens during treatment?

Blood tests are not just a one-off requirement. They are usually repeated throughout the course of treatment to monitor how your body is responding. In most cases, these changes are mild and manageable, but regular monitoring ensures that any issues are picked up early and the dosage can be adjusted if needed.

Final thoughts

Isotretinoin for acne can be highly effective, but it is not a treatment that should be taken lightly. Blood tests are a key part of ensuring both safety and success, and following the recommended monitoring process helps minimise risks while achieving the best possible outcome.