The greater the number of steps, the greater the potential for making a mistake. A health care professional can help pick the test best sited for you. Manufacturers of most test kits provide a toll-free number to call with questions or for more information. The kit probably has an expiration date. It is essential to rad directions carefully.
Many tests require a waiting period of time before performing the next step.
A mistake in the procedure could lead to inaccurate results. As with most screening tests, there are false positives and false negatives. Any questionable results always should be brought to the attention of your health care provider for confirmation.