Patient's question:
Patient Age: We did the Down syndrome screening and it came back as high risk. I don't understand the amniocentesis report.Doctor's answer:
Hello! The normal karyotype for a male is: 46, XY. The normal karyotype for a female is: 46, XX. Since fetal karyotype cannot reveal the sex, a normal fetal karyotype report is generally: 46, X. The karyotype for a child with Down syndrome is: 47, X, +21. Since your report already indicates "Karyotype analysis G-band (320 bands) shows no abnormalities," it means your fetus has 46 chromosomes, and under the resolution of 320 bands, no abnormalities are observed, indicating a chromosomally normal fetus. Hope this helps!