fertilization age การใช้

• Gestational age is not the same as fertilization age.
• Thus a 6-week gestational age would be a 4-week fertilization age.
• By convention, gestational age is calculated by adding 14 days to fertilization age and vice versa.
• Fertilization age is sometimes used postnatally ( after birth ) as well to estimate various risk factors.
• Fertilization ( conception ) is sometimes used as the initiation of pregnancy, with the derived age being termed fertilization age.
• This corresponds to a fertilization age of approximately 5 to 7 days, which corresponds well with the time of implantation.
• The age from this point in time ( conception ) is called the fertilization age and is thus 2 weeks shorter than the gestational age.