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Chromosome Analysis, Amniotic Fluid (includes Alpha-fetoprotein, amniotic fluid)
|Test group||Chromosome Analysis|
|Performed by||Medical Genomics - Cytogenetics & China Basin Chemistry|
|In House Availability||Set up daily, Monday-Friday|
|Method||Giemsa banding and brightfield microscopy|
|Collection Instructions||Sample is to be collected in two 15 mL orange screw top polypropylene tubes. Discard first 2 mL of fluid, and then add 15-25 mL to two tubes.
If the sample is grossly bloody, or the sample volume is < 10 mL the results may be inconclusive and a repeat sample will be requested.
Complete and submit a "UCSF Reproductive Genetics Lab Results" or a "UCSF Cytogenetic Requisition" form and send with the samples.
Click here for Cytogenetics Requisition
Keep samples at Room temperature. DO NOT centrifuge.
|Container type||Sterile centrifuge tube with screw cap, polypropylene preferred.|
|Amount to Collect||30 mL amniotic fluid|
|Sample type||Amniotic fluid|
|Preferred volume||30 mL amniotic fluid|
|Min. Volume||10 mL amniotic fluid|
|UCSF Rejection Criteria||Insufficient volume; unlabeled tubes; clotted samples; broken, leaking or contaminated tubes; frozen samples.|
|Processing notes||This package code orders CYAF, AFPX and SENDO.
Keep samples at Room temperature. DO NOT CENTRIFUGE for any reason. Send all tubes and completed paperwork asap to the Cytogenetics laboratory at China Basin.
|Normal range||46,XY normal male
46,XX normal female
|Synonyms||Cytogenetic analysis; Prenatal cytogenetics; Amniotic fluid; Karyotype; Karyotyping|
|Turn around times||7-14 days|
|Reflex?||If an abnormality is detected ta Cytogenetics Director will determine the appropriate additional studies (e.g. C-banding, NOR) to be performed to characterize the abnormality.
If additional metaphases are required for final interpretation additional counts will be performed and billed for.
Additional testing may be omitted if specifically requested when the sample is submitted for cytogenetic analysis.
|CPT coding||88235, 88267, 88280, 82106|
|Last Updated||1/22/2014 8:57:02 AM|