New figures from the Health Protection Agency show that one in five people offered an HIV test refuse to have the test.
It is estimated that 96,500 people are HIV+ in the UK in 2010, with a quarter of them unaware of their status and most likely to infect their partners.
Only 4% of the population were tested in 2010, many of these pregnant women who are offered the test as a routine part of their pregnancy care.
The most accurate HIV tests are a simple blood test with results available from Better2Know within 2-3 working days. The test is nothing to worry about, but carrying the virus without knowing it is a far more serious problem.