Two tests are performed, the short and the long test.
The test is fast and can be performed in a doctor's office.
Many medical tests are performed on her but of no use.
She said tonight that those tests were performed within the last four years.
The test can be performed at the office of a candidate's doctor.
The test is performed to find out how many white blood cells you have.
A given test is usually performed in only a small number of laboratories.
The test can only be performed during the 15th and 20th week of pregnancy.
The test is performed about the 16th week of pregnancy.
Many such tests had been performed, all with a high level of confidence.
