KARYOTYPE CHORIONIC VILLI
- Advanced maternal age (≥35 years at EDD) - Abnormal ultrasound findings - Positive maternal serum screening - Previous history of chromosome abnormality - Family history of Down syndrome - Parental anxiety
Chorionic villi (10 - 30mg) by transabdominal or transcervical sampling in a sterile tube containing transport medium supplied by our Cytogenetics Laboratory.
In situ coverslip technique
Normal or Abnormal. If Abnormal, the karyotypic abnormality is described in accordance to the International System for Human Cytogenomic Nomenclature (ISCN, 2016).
8 ~ 14 days
Monday - Saturday (office hours)
Indicate clearly the clinical indications, gestation age, LMP, EDD and weight of villus samples taken on the cytogenetics request form or CPOE. Do not despatch a specimen near a weekend or a public holiday to avoid unnecessary delays.