Stanford Health Care
About Stanford Clinical LaboratoryLicensureContact Us

Home
Test Directory

Test Requisitions Specimen Collection
Critical Values
Administrative Department
Clinical DepartmentsDepartment of PathologyEsoteric DepartmentsFeatured Services



PRENATAL SCREEN, FISH

Test Code: CGF PRENAT
General Information: Prenatal FISH is a fast and simple way to determine the sex chromosome complement of the fetus (X and Y probes), as well as to determine if the fetus has trisomy 13, 18 or 21. This technique allows the use of direct amniotic fluid cells that have not been cultured. Standard metaphase chromosome analysis is also performed on all samples sent for prenatal FISH, both to confirm the FISH findings, as well as to detect other chromosomal anomalies that were not recognized by the FISH probes.

 

Indications:
  • Late gestational age (>20 weeks of gestation at the time of amniocentesis)
  • Abnormalities found on ultrasound that are indicators of trisomy 13, 18 or 21, as well as Turner syndrome (45,X)
  • Abnormal maternal triple marker screen and late gestational age
  • Other obstetrical care issues

 
 


 
Home | About Stanford Clinical Laboratories | Careers | Contact Us | Legal Notices & Disclaimer