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Attrition in oocyte retrieval and IVF: Data from 11,000 plus IVF cycles
References: Wang Y, Zhang M, Shi H, et al. Causes and Effects of Oocyte Retrieval Difficulties: A Retrospective Study of 10,624...

Dr. Kramer
1 min read


Two very common client questions
Two very common client questions: How many embryos should be transferred? How many embryo transfers will be needed to achieve a...

Dr. Kramer
2 min read


Oocyte Numbers by Female Age-Human
As the above figure demonstrates fertility decreases about age 31 and then dramatically after age 37. This is due to decreasing numbers...

Dr. Kramer
1 min read


Karyotyping (chromosome analysis) Basics
Karyotyping is done to: Find out whether the chromosomes of an adult have a change that can be passed on to a child. Find out whether a...

Dr. Kramer
2 min read


Recommendations for practices using gestational carriers: a committee opinion
Practice Committee of the American Society for Reproductive Medicine and Practice Committee of the Society for Assisted Reproductive...

Dr. Kramer
1 min read


Glossary of Medical Terms
ART: Acronym for Assisted Reproductive Technologies, defined by many to mean the handling outside the body of both egg and sperm. This...

Dr. Kramer
4 min read


An Astarte Group Medical Information Primer: PGT-x
Preimplantation Genetic Testing: What is it and do I need it? With in vitro fertilization, we can access the developing embryo. As the...

Dr. Kramer
5 min read


Sperm Analysis for Fertility
Reasons for infertility are 40% female issues, 40% male issues and 20% unknown. To determine if infertility is due to the male a semen...

Dr. Kramer
7 min read


Basic Understanding of Sperm Analysis
Sperm count, concentration and volume The sperm count relates to how many sperm you have in your semen sample. You will see a number...

Dr. Kramer
1 min read


Videos Curated by Dr. Kramer for Educational Purposes
PGT Testing videos Creating your own family is one of the most important journeys of your life and we would like to be part of it. Our...

Dr. Kramer
1 min read


Sperm: DNA Fragmentation
What Is Sperm DNA Fragmentation? DNA is the hereditary material in humans and other organisms and consists of two long chains—DNA...

Dr. Kramer
3 min read


Demystifying Embryo Grading: What You Need to Know
Understanding Embryo Grading. Embryologists use a system of grading embryos to determine which are the best for transfer. The most...

Dr. Kramer
4 min read


Why Choose Astarte Group
Surrogacy can be a very rewarding experience if everything is done correctly. There are many aspects to take into consideration when...

Dr. Kramer
2 min read
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