T (Thymus Derived) Lymphocyte Count. Definition. T cells are a type of white blood cells (lymphocytes). They make up part of the immune system. T cells help the body fight diseases or harmful substances. A test can be done to measure the number of T cells in your blood. Thymus derived lymphocyte count; T-lymphocyte count.
The road test generally takes 15 to 20 minutes. 1  If you fail the road test you must wait a minimum of two weeks (14 days) before taking the road test again and must pay another $40 testing fee. 2  Test results are valid for 2 years. If you fail the road test you must wait a minimum of two weeks (14 days) before taking the road test again and must pay another $40 testing fee. 2  Test results are valid for 2 years.
View. comments. Success: But women need an average of four more lessons than men to pass their driving test. Women take longer to pass their driving test than men, according to a study. Researchers found girls need an average of 21 lessons before they pass their test, compared to just 17 lessons for men.Men are also more likely to pass first time with less than 54 per cent needing another attempt, while 57 per cent of women have to take a second test.he poll of 3,000 drivers revealed the average bloke passes his test at the age of 19 and eight months, while the average woman has to wait until she is 20 years and six months. More than one in 20 ladies even passed their 31st birthday before they were able to get behind the wheel of a car on their own.