Yet no other tests exist to detect the diseases, the most common forms of cancer in men and women.

The tests needed do not yet exist, in fully satisfactory form.

Sufferers often do not know they are affected by them, but medical tests exist to verify.

A genetic test exists now to tell me if I have the gene.

It is a matter for very great regret that no simple and certain tests of success in this practice exist.

That test, however, has been around for decades and currently exists in a number of variations.

A similar test has also existed in Finland since the mid-19th century.

Similar tests exist in other countries where Chinese is an official language.

In 1993, when she was 51, the test did not yet exist.

The test did not exist in his father's lifetime.