Numark Ovulation Tests 5 are for the reliable prediction of the most fertile days. For self-testing.

When to start chart
Your cycle length
Start to test on
21 days
Day 6
22 days
Day 6
23 days
Day 7
24 days
Day 7
25 days
Day 8
26 days
Day 9
27 days
Day 10
28 Days
Day 11
29 days
Day 12
30 days
Day 13
31 days
Day 14
32 days
Day 15
 

Usage:
This in-vitro diagnostic medical device for self-testing cab be used for the qualitative determination of LH levels in the urine in order to predict the ovulation days during the standard menstrual cycle.