1. Application of redefined human chorionic gonadotropin curves for the diagnosis of women at risk for ectopic pregnancy 
Beata E. Seeber, M.D., Mary D. Sammel, Sc.D., Wensheng Guo, Ph.D., Lan Zhou, Ph.D., Amy Hummel, M.S., C.C.R.C., Kurt T. Barnhart, M.D., M.S.C.E. 
Fertility and Sterility 
Volume 86, Issue 2, Pages (August 2006)
DOI: /j.fertnstert
Copyright © 2006 American Society for Reproductive Medicine Terms and Conditions

2. FIGURE 1
Minimal rise in hCG of 35% for IUP (solid line) and a hypothetical patient with initially appropriate, then abnormal, rise in hCG. X marks time at which intervention is necessary to rule out EP.
Seeber. HCG curves and ectopic pregnancy. Fertil Steril 2006.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2006 American Society for Reproductive Medicine Terms and Conditions

3. FIGURE 2
Minimal fall in hCG of 35% for SAB (solid line) and a hypothetical patient with initially appropriate, then abnormal, fall in hCG. X marks time at which intervention is necessary to rule out EP.
Seeber. HCG curves and ectopic pregnancy. Fertil Steril 2006.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2006 American Society for Reproductive Medicine Terms and Conditions