When to Begin Testing
You may test at any time of the day, but you should test at approximately the same time each day. Reduce your liquid intake for 2 hours before testing. To find out when to begin testing, determine the length of your normal cycle. The length of your cycle is from the beginning of one period (the day of first bleeding) to the beginning of the next. Count the first day of bleeding or spotting as day one (1). If your cycle length is irregular, that is, if it varies by more than a few days each month take the average number of days for the last 3 months. Use the chart shown to work out the day you should begin testing. The day you begin testing is posted opposite the number of days in your normal cycle.
Length of Normal Cycle
(Total days) Start testing this many days after your last period began. Lenght of Normal Cycle
(Total days) Start testing this many days after your last period began.
21 5 31 14
22 5 32 15
23 6 33 16
24 7 34 17
25 8 35 18
26 9 36 19
27 10 37 20
28 11 38 21
29 12 39 22
30 13 40 23
For example, if your period normally begins every 28 days, you should begin testing eleven (11) days after the beginning of your last period.
SUN MON TUES WED THURS FRI SAT
1 2 3 4 5 6 7
8 9 * 10 11 12 13 14
15 16 17 18 19 (s) 20 21
22 23 24 25 26 27 28
29 30 31
Note in the calendar above: If the ninth ( 9th) in the calendar above is the first day (day one *) of menstrual bleeding, then the 19th, or day eleven, of your cycle is the day to begin testing (s).