Certified Medical Magazine by WMA, ACSA, HON
FAQs
0
Menu

What are the main reasons for poor response to fertility drugs?

By Andrea Rodrigo.
Last Update: 11/02/2016

Women requiring larger doses of stimulation drugs are commonly called "poor responders". Although there is no clear definition for what can be considered a low response to IVF drugs, many authors use a cut-off of less than 4 mature eggs at the time of hCG shots or an estradiol level of less than 500.

Low response is detected through ovarian reserve testing, including basal FSH levels. Ultrasound assessment of the ovaries and the antral follicle number are also good predictors of poor responders to stimulation drugs.

A cycle can be cancelled if less than 4 mature eggs are produced or if no response is obtained at all.

Suggested for you: What Medications Are Used for Ovarian Stimulation?.

 Andrea Rodrigo
Andrea Rodrigo
BSc, MSc
Embryologist
Bachelor's Degree in Biotechnology from the Polytechnic University of Valencia. Master's Degree in Biotechnology of Human Assisted Reproduction from the University of Valencia along with the Valencian Infertility Institute (IVI). Postgraduate course in Medical Genetics.
Embryologist. Bachelor's Degree in Biotechnology from the Polytechnic University of Valencia. Master's Degree in Biotechnology of Human Assisted Reproduction from the University of Valencia along with the Valencian Infertility Institute (IVI). Postgraduate course in Medical Genetics.
We use own cookies and third party cookies to offer you personalized ads and gather statistical data. If you continue the navigation we understand that you accept our cookies policy.