FREE: Ovulation Predictor strips

I have 6 Ovulation predictor strips total. 4 that expire 03/2011 and 2 that expire on 01/2012.

Home ovulation tests help determine the best time to attempt conception. Tests detect the luteinising hormone (LH) which is responsible for ovulation with a 99 percent accuracy rate. . LH levels surge 24-36 hours before ovulation. Home ovulation tests detect the LH surge via chemically analyzing a urine sample to detect the amount of LH present.
The LH surge at the time of ovulation is woefully brief. To detect the surge, it is necessary to test at the right time of month in addition to the right time of day. Most testing instructions indicate the best time to test is at 11AM, 3PM, 5PM and 10PM. To increase your opportunity of catching the surge it may be in your interest to test twice a day, once in the morning and once in the evening. It is recommended that you decrease fluid intake two hours before testing as too much liquid can dilute the amount of LH in the urine.