ACHE, amniotic fluid, with reflex to Hb F-13503

Test info

  
ACHE, amniotic fluid, with reflex to Hb F
  
13503
  
LAB13503
  
ACHE
  
AChE
Amniotic Fluid With Reflex to Hb F
Acetylcholinesterase (AChE), amniotic fluid w/ reflex to fetal hemoglobin (Hb F)
  

Analysis of midtrimester amniotic fluid for detection of open neural tube defects and ventral wall defects

Specimen

  
  • The patient's gestational age must be at least 13 weeks for accurate AChE detection
  • Optimal gestational age is 14 to 18 weeks
  
Amniotic fluid
  

Sterile vial/container

  
3.0 mL
  
3.0 mL
  

Avoid contamination of amniotic fluid with maternal or fetal blood. As little as one drop of fetal blood can cause false-positive results during assay of amniotic fluid.

  

Sterile vial/container.

Do NOT use urine containers or tubes with rubber stoppers; rubber is toxic to amniocytes.

  

 Gestational age by ultrasound and/or last menstrual period (LMP)

  

Ambient

  
  • Specimen found not to be amniotic fluid
  • Gross contamination of amniotic fluid with maternal or fetal blood
  • Quantity not sufficient for analysis (QNS)

Performance

  
LabCorp RTP (510354): R-LC
  
3x/week
  
8 - 14 days
  
  • Acrylamide gel electrophoresis
  •  Isoelectric focusing (IEF)

Clinical and Interpretive info

  

Negative

Billing

  
82013

Tracking

  
03/27/2019
  
06/26/2019
  
02/11/2021