A surrogate mother vs an egg donor
Both a surrogate mother and an egg donor take part in a assisted reproduction approach; however, their roles are different.
A surrogate mother is a biological substitution of a genetic or an intended mother, who consents voluntary to carry and give a birth to a baby for a childless family or a single and agrees to delegate her parental rights to them on a paid basis or without payment. An egg donor is a person who agrees willingly to give her gametes, usually on commercial basis, to be used in an in vitro fertilization procedure. And, as a rule, this woman doesn’t participate in carrying and giving birth to a child. In rare cases, the surrogate can become an egg donor, if the body of an intended mother doesn’ t produce eggs ,or she doesn’t want to transfer their baby genetic or infectious diseases. But, generally, intended parents choose another donor for surrogacy to avoid legal problems in the future. The parental rights of an egg donor and a surrogate mother on the infant are still a big question to dispute around the world. The law is usually quite controversial about this matter, so the best solution will be to consult a legal expert from the country, where surrogacy and egg donation takes place.
A surrogate mother vs a gestational carrier
The term ”surrogate mother” implies the woman who carries or delivers the baby on contractual basis for other people. However, not everyone knows that it is an umbrella notion for two types of surrogates. Their roles differ significantly and this difference should be explained. The most common type of a surrogate is a gestational surrogate or a so-called gestational carrier. The embryo that is transferred into her uterus doesn’t contain surrogate mother’s genes and is entirely a combination of future parents’ genetic material. The second traditional type of a surrogate has a biological relation to a baby and is fertilized by donor’s or intended genetic father’s sperm. The legislation regulations about surrogacy in general are quite ambiguous so there is a point in studying the codes and laws with a competent person before onset of the procedure.
A surrogate vs a clinical endpoint
These two terms aren’t linked to the surrogacy, but to pharmacology. Clinical endpoint is a situation during clinical trial, when an expected process occurs e.g. the disease develops, the symptoms appear, or a particular laboratory result is received, the illness is overcome. A surrogate endpoint is an intermediate point before a clinical endpoint when an insignificant, partial or not as expected result is obtained that doesn’t yield a full picture.