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. 2011 Jan 11;183(1):73-6.
doi: 10.1503/cmaj.090195. Epub 2010 Nov 15.

Personal fertility monitors for contraception

Thomas P Bouchard  1 , Stephen J Genuis
Affiliations

Personal fertility monitors for contraception

Thomas P Bouchard et al. CMAJ. .
No abstract available

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Figures

Figure 1:
Figure 1:
Effective use of the Clearblue Easy (A) and the Persona (B) fertility monitors requires three steps: 1. A button marked “M” is pressed at the onset of menstruation. 2. Daily testing is performed by wetting a test stick with first morning urine and inserting the stick into the monitor. “High” and “peak” readings on the Clearblue Easy monitor, or a red light on the Persona monitor, indicate the fertile period. 3. With the Clearblue Easy monitor, testing starts on day 6 and continues until the last “high” reading (usually 10–15 days per month); with the Persona monitor, testing starts on day 6 and continues for 16 days in the first cycle and for 8 days in each subsequent cycle.
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