A hypothesis is a tentative statement about the relationship between two or more variables. Learn more about the elements of a good hypothesis.
1 If not, typical out-of-pocket expenses consist of a laboratory copay of $10 to $30 per test. 2  For patients not covered by health insurance, STD tests done at a doctor's office usually cost $50 to $200 each, depending on the test.
In 2000, an estimated nine million cases of STDs occurred among persons aged 15-24. In addition, STDs impose a substantial economic burden: The direct cost of STDs, including HIV, among all age-groups was estimated to be $9.3-15.5 billion in the United States in the mid-1990s, adjusted to year 2000 dollars.