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. Author manuscript; available in PMC: 2008 Jan 7.
Published in final edited form as: Fertil Steril. 2007 Mar 26;88(5):1404–1407. doi: 10.1016/j.fertnstert.2006.12.016

Figure 2.

Figure 2

Daily blood spot (left panel) versus biweekly plasma (right panel) sampling for an entire menstrual cycle (FSH IU/mL, LH IU/mL, P ng/mL, E2 pg/mL) in one woman.