TPMT Enzyme Activity (Thiopurine Methyl Transferase) Plasma

A positive result means that one or more genetic variations associated with decreased TPMT enzyme activity were identified. This information can guide your healthcare provider in determining the most appropriate dosage of thiopurine medication for you.

A negative result means that no genetic variations associated with decreased TPMT enzyme activity were identified. In this case, you are considered to have "normal" TPMT activity and are likely to metabolize thiopurine drugs at a normal rate.

This test is typically recommended for individuals who are about to start therapy with thiopurine medications. The results can help guide the initial dosing and avoid potential adverse effects.

Yes, there are no dietary restrictions before this test. You can eat and drink as normal.

The risks associated with this test are minimal and similar to those of any other blood test. These might include slight pain or bruising at the site where the needle was inserted, but serious complications are rare.

After the test, your healthcare provider will review the results and discuss them with you. If your results indicate that you have a variation in your TPMT gene, they may adjust your dosage of thiopurine medication or suggest a different treatment approach.

No, your TPMT genotype is determined by your genes and does not change over time.

Coverage varies depending on your insurance plan. It's important to check with your insurance provider to understand what costs you may be responsible for.

The test can help predict your risk of experiencing side effects from thiopurine medications, but it does not predict the effectiveness of these drugs in treating your condition.

Yes, you can take this test while on medication. However, always inform your healthcare provider of any medications or supplements you are taking, as they may interfere with the test results.

No, this test requires a blood draw, which should be performed by a healthcare professional in a clinical setting.

Since TPMT genotyping is a genetic test, the results are generally not affected by your current health condition. However, the interpretation of the results in terms of drug response might depend on other factors, such as liver function and the presence of other concurrent medications.

This test is highly reliable for detecting specific genetic variations in the TPMT gene. However, there may be other genetic and non-genetic factors that can also affect how you respond to thiopurine medications.

Yes, in addition to TPMT genotyping, a TPMT enzyme activity test can also provide useful information about how you are likely to respond to thiopurine medications.

If you have a variant in your TPMT gene, your healthcare provider may adjust your dose of thiopurine medication or consider a different treatment approach. This decision will depend on various factors, including your overall health, the severity of your condition, and other medications you may be taking.

There is no special preparation needed for this test. You can eat and drink normally before the test. If you have any questions or concerns about the test, be sure to discuss them with your healthcare provider.

No, this test can be performed on individuals of any age, including children. However, the decision to perform this test should be made by a healthcare provider based on an individual's health history and potential benefits and risks.

If you have a genetic variant that results in low TPMT activity, your healthcare provider may adjust your thiopurine dosage or consider alternative medications. This will depend on the specific condition being treated and other factors related to your overall health.