Acetylcholinesterase

Test Code

4929

CPT Codes
82664

Preferred Specimen

1.5 mL amniotic fluid collected in a sterile transport tube

Minimum Volume

0.5 mL

Instructions

Collect in a sterile transport tube. Indicate gestational age, collection date, clinical indication, and the AFP and MOM results, if available, on the test requisition.

Note: This test is automatically performed on all Alpha-Fetoprotein amniotic fluids when the Mom is greater than 1.99.

Transport Container

Transport tube

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 14 days
Rrefrigerated: 4 months
Frozen: 3 years

Methodology
Gel Electrophoresis

FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

This test code is for non-New York patient testing. For New York patient testing, use test code 10230.

Setup Schedule

Am Tue, thu

Report Available

4 days

Limitations

Substantial hemorrhage into amniotic fluid may cause AChE and AFP to increase.

Reference Range

Negative

Clinical Significance

Acetylcholinesterase is useful to confirm fetal open neural tube defects and open ventral abdominal wall defects. Hemoglobin F, amniotic fluid is typically ordered simultaneously to exclude the possibility of fetal blood contamination.

Performing Laboratory

Quest Diagnostics Nichols Institute-San Juan Capistrano, CA

33608 Ortega Highway

San Juan Capistrano, CA 92675-2042

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.