What's the difference between BCC and Marquette?

​If you’re looking to use a monitor-based Natural Family Planning method, you might be trying to figure out what your various options are, and how they are different. This blog post compares two current methods which utilize the Clearblue fertility monitor: the Marquette Model and Boston Cross Check.
 
As a Boston Cross Check instructor, I often get asked about what the differences are between the Marquette Model of NFP and our method. A lot of people assume that BCC is simply “Marquette + BBT,” meaning that Boston Cross Check has taken Marquette protocols and added a basal body temperature sign, but this actually misrepresents both methods! What I hope to do here is to give you a sense of how these methods are similar, and how they might be different from the user perspective. Unless otherwise stated, protocol references I will make refer to standard protocols in the case of each method, meaning that the woman or couple are in a “regular” cycling situation as distinct from particular medical situations and/or times of transition like postpartum, post-miscarriage, or perimenopause.

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