What is analysed in a programmed death-ligand 1 (PD-L1) test?

The PD-L1 test is performed to evaluate the amount of PD-L1 protein present in cancer cells.

What does the result mean?

The result of the PD-L1 test indicates the amount of PD-L1 protein present in cancer cells. The results are grouped into three categories: negative, low, and high. The category to which the result belongs can help determine the best treatment for cancer.

Why is the analysis done?

The PD-L1 test is performed to evaluate the amount of PD-L1 protein present in cancer cells. The category to which the result belongs can help determine the best treatment for cancer.

When is the analysis done?

The PD-L1 test is performed in patients with advanced non-small cell lung cancer (NSCLC) to determine if the patient is a good candidate for immunotherapy.

What sample is required?

The determination is made from a tissue sample from the tumour.

Is any preparation required?

No special preparation is needed for this test.

How is it used?

The PD-L1 test is used to determine if the patient is a good candidate for immunotherapy. Immunotherapy is a treatment that uses the body’s immune system to fight cancer. If the result of the PD-L1 test is positive, the patient may be a good candidate for immunotherapy. 

What are the normal values?

There are no established normal values for the PD-L1 test. The results are grouped into three categories: negative, low, and high.