The mother starts providing IgG to the baby at around 20 weeks gestation
Levels increase dramatically until birth, where they peak
After birth the maternal IgG is gradually removed from the blood, and endogenous IgG is produced. However, IgG production is not as quick as IgG breakdown, and as a result, IgG levels are lower than those at birth – even for the first few years of life. They are lowest at about 3 years of age.
Dr Tom Leach MBChB DCH EMCert(ACEM) currently works as a GP Registrar and an Emergency Department CMO in Australia. He is also a Clinical Associate Lecturer at the Australian National University. After graduating from his medical degree at the University of Manchester in 2011, Tom completed his Foundation Training at Bolton Royal Hospital, before moving to Australia in 2013. He started almostadoctor whilst a third year medical student in 2009.
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