What is being analysed?

Warfarin sensitivity testing evaluates an individual's response to the anticoagulant medication, warfarin. It primarily measures how efficiently the body metabolises the drug, which helps determine the appropriate dosage for effective treatment.

What does the result mean?

The result of the test indicates the patient's sensitivity to warfarin. This sensitivity determines how the individual's body will react to the medication and whether they may require higher or lower doses for optimal therapeutic effects.

Why undergo the analysis?

Patients undergoing warfarin therapy may undergo this analysis to ensure they receive the correct dosage tailored to their individual needs. It helps healthcare providers optimise treatment efficacy while minimising the risk of adverse effects such as bleeding or clotting complications.

When to undergo the analysis?

The analysis is typically recommended before initiating warfarin therapy to establish baseline sensitivity. Additionally, it may be performed periodically during treatment to monitor changes in sensitivity and adjust dosage accordingly.

What sample is required?

A blood sample is required for warfarin sensitivity testing. The sample is usually obtained through a standard venipuncture procedure.

Is any prior preparation necessary?

Generally, no specific preparation is required before undergoing warfarin sensitivity testing. However, patients should follow any instructions provided by their healthcare provider, such as fasting requirements or temporarily discontinuing certain medications that could interfere with the test results.

How is it used?

The results of the warfarin sensitivity test guide healthcare providers in determining the appropriate initial dosage of warfarin and subsequent adjustments based on the patient's response. This personalised approach helps optimise therapeutic outcomes while minimising the risk of complications.

What are the normal values?

What does it mean to have altered values?

Altered values in warfarin sensitivity testing may indicate that the patient requires a dosage adjustment. Higher sensitivity levels may suggest a need for lower warfarin doses to prevent excessive anticoagulation and bleeding risk, while lower sensitivity levels may necessitate higher doses to achieve therapeutic effects.