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Alpha-fetoprotein, amniotic fluid (with reflex to Acetylcholinesterase and Hgb F)
|Test Update Information||Effective October 4, 2010, the Amniotic fluid AFP test is being performed in Chemistry China Basin on the Siemens Centaur chemiluminescent immunoassay instrument|
|Performed by||China Basin Chemistry (Quest for reflex Acetylcholinesterase and Hgb F)|
|In House Availability||Test performed Monday, Wednesday and Fridays. Results reported by 1600.|
|Collection Instructions||Avoid contaminating the fluid with blood. Gestational age (15 to 24 weeks) must be provided for interpretation of results. Indicate gestational age, collection date, and clinical indications, if available, on the Cytogenetics test requisition form.|
|Container type||Clean container|
|Amount to Collect||3 mL amniotic fluid|
|Sample type||Amniotic fluid|
|Preferred volume||3 mL amniotic fluid|
|Min. Volume||1.2 mL amniotic fluid|
|UCSF Rejection Criteria||Bloody samples.|
|Processing notes||Refrigerate sample and transport to China Basin Cytogenetics
If reflex testing is required, acetylcholinesterase and hemoglobin F (Quest order code 8284N) will be entered and billed for services performed when tests are completed.
|Stability||Room temperature 2 weeks, refrigerated 3 weeks, frozen at -20C 1 year.|
|Additional information||Based on AFP result the sample will also be tested for acetylcholesterase and fetal hemoglobin. If reflex testing is required, the required tests will be entered and billed as performed.
Amniotic fluid samples collected before 15 weeks gestation will be sent to Quest Diagnostics for testing due to no in-house established MoM for these early gestational ages. Quest order code 232Z.
|Last Updated||3/24/2013 7:06:13 PM|
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