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Department of Pathology

AMNIOTIC FLUID CHROMOSOME ANALYSIS, Amniotic Fluid

Synonyms: Karyotyping, Chromosome Studies, Prenatal Chromosome Analysis, Cytogenetic Analysis Limited Coverage Test (NCD) and LCD

Lab: Clinical Cytogenetics Laboratory, Children's Hospital, Suite # 3.350

Request Form: Cytogenetic Requistion Form

Collection: Amniocentesis at 16-18 wk gestational age

Storage Instructions: Amniotic fluid should be delivered as soon as possible.  If immediate delivery is not possible, fluid can be stored at room temperature or refrigerated.  It should not be frozen or exposed to temperature extremes.

Causes for Rejection: Failure to discard first 2 cc of amniotic fluid, missing or incomplete paperwork, unlabelled tubes, insufficient sample, frozen sample

Availability: Samples are received 8 AM - 4:30 PM, Monday-Friday, at Clinical Cytogenetics Laboratory, Children's Hospital, Suite # 3.350.

Turnaround Time: 15 days

Special Instructions: Contact Cytogenetics Laboratory at X23466 or X23465. Deliver sample to Children's Hospital, Suite # 3.350. Samples collected after hours or on weekends should be held until the next working day.

Specimen: Amniotic Fluid

Volume: 15-20 mL

Minimum Volume: 10-15 mL

Container: Capped syringe in leak- and puncture-proof container

Reference Ranges: - 46,XX or 46,XY

Reviewed  10/19/07 by J. Northup

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