GENETIC & CONGENITAL DISORDERS
Culture fetal cells; microscopic chromosomal study
Karyotyping (chromosome analysis)
GENETIC & CONGENITAL DISORDERS
Detects aneuploidy (Down, Turner, etc.)
Karyotyping (chromosome analysis)
GENETIC & CONGENITAL DISORDERS
Molecular detection of chromosomal abnormalities
FISH / PCR
GENETIC & CONGENITAL DISORDERS
Rapid genetic diagnosis
FISH / PCR
GENETIC & CONGENITAL DISORDERS
PCR or sequencing of fetal DNA
DNA studies
GENETIC & CONGENITAL DISORDERS
Single-gene disorders (e.g., cystic fibrosis, thalassemia)
DNA studies
GENETIC & CONGENITAL DISORDERS
Immunoassay
Alpha-fetoprotein (AFP)
GENETIC & CONGENITAL DISORDERS
high AFP - Neural tube defects (spina bifida, anencephaly)
Alpha-fetoprotein (AFP)
GENETIC & CONGENITAL DISORDERS
Enzyme detection
Acetylcholinesterase test
GENETIC & CONGENITAL DISORDERS
Confirms neural tube defects if AFP elevated
Acetylcholinesterase test