Some of the techniques used for Antenatal Diagnosis



Amniocentesis 

 - Chromosome/micro-array and DNA analysis 

 - Fetal infection — PCR 

Fetal blood sampling 

 - Fetal haemoglobin for anaemia 

 - Fetal infection serology 

 - Fetal blood transfusion 

Chorionic villus sampling 

 - Chromosome/micro-array and DNA analysis 

 - Fetal infection — PCR 

 - Enzyme analysis of inborn error of metabolism 

Preimplantation genetic diagnosis (PGD) 

 - In vitro fertilisation allows genetic analysis of cells from developing embryo before transfer to the uterus 

Fetoscopy 

 - Minimally invasive surgery, e.g. laser photo-coagulation of communicating vessels in twin—twin 

 transfusion syndrome. 

Non-invasive genetic diagnosis — free fetal DNA from maternal blood 

 - Identification of fetal gender and rhesus status 



#Antenatal #Testing #Diagnosis #Laboratory #Obstetrics #OBGyn