Summary: you may begin the test 11 days after your first period since the average cycle length is 28 days Perform 1 test each day over a 5 day period or until the LH surge has been detected URINE COLLECTION 1 Do not use first morning urine samples as LH is synthesized in your body early in the morning It will not show up in your urine until later in the day 2 The best time
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