Constitutional karyotype - amniotic fluid - prenatal
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CLA
Specialty
Cytogenetics
Clinical significance
Amniotic fluid-based chromosome analysis involves counting, identifying and studying the morphological characteristics of fetal chromosomes.This is indicated in: - mothers of 38 or over; - couples who have previously had an abnormal child; - one parent is known to be a carrier of some chromosomal abnormality; - fetal abnormality detected by ultrasound scan; - women with a positive Down syndrome serum screen result (a risk of 1/250 or higher); - for sex determination (for X-linked diseases). Other parameters can also be studied on amniotic fluid, e.g. AFP, acetylcholinesterase, viruses and molecular genetics.
Preanalytics
- 2 x 10 mL :
- amniotic fluid
- Ambient temperature
- A tube specifically for this analysis : No
Further information
For sample traceability purposes, we invite you to contact the International Division before sending samples
ALWAYS attach the medical prescription, the clinical patient's history and the consent form signed by both the patient and the prescribing clinical
Specific equipment available
- S9P: Envelopes orange for karyotypes PARIS
Methodology
Conventional cytogenetics: Culture + chromosome analysis
Turnaround time
10 to 14 days (depending on cells growth)
Biomnis Ivry