CHROMOSOME ANALYSIS, AMNIOTIC FLUID
Marquette General Health System

General Info

HLAB/HOL Code

   CHRAF

MGH LIS Test No

   8054

Schedule

   Monday through Sunday

Testing Time

   9 Days

Testing Lab

   Mayo Labs

QORR Test Code

   C8054

Specimen Info

Type

      

Volume

    

Temperature

   Refrig\Ambient OK\Frozen NO

Preservative

    

Collection Info

   Obtain specimen during 15th-16th week of gestation.
Draw 20 mL of amniotic fluid in a sterile syringe (we strongly
recommend Baxter Pharmaseal amniocentesis tray).  When using an
Baxter Pharmaseal amniocentesis kit, transfer the amniotic
fluid into the transport containers.  If Baxter Pharmaseal
amniocentesis tray is not available, use a Becton-Dickinson syringe
and transport specimen as follows.  Remove needle and transfer the
specimen to two screw-capped, sterile 15-mL centrifuge tubes.
Place the tubes in Mayo Medical Laboratories' Styrofoam container
(Supply T329). Fill remaining space with packing material.  
Unavoidably, about 1-2% of mailed-in specimens are not viable.  Bloody 
specimens are undesirable. If your specimen does not grow in culture, 
you will be notified within 10 days of receipt. Label container with 
patient's name and laboratory control number. Send specimen 
refrigerated. (Keep specimen cool with frozen coolant April-October. 
Protect specimen from freezing by placing it in a bubble-pack bag 
[Supply T055] supplied by Mayo Medical Laboratories. Use refrigerated 
coolant November-March). SPECIMEN CANNOT BE FROZEN. Results will be 
reported and also telephoned. Advise Express Mail or equivalent if not 
on courier service.
NOTE:  Please complete a "Cytogenetics/AFP Congenital Disorders
       Request Form" (Supply T238) and forward it with the specimen.  
       This form is supplied by Mayo Medical Laboratories.      
 
Specimen Acceptability

Methods
Includes 2-banded karyotypes, analysis of 20 or more metaphases, and other techniques when required. Results confirmed in 10 or more different colonies and 2 or more primary cultures. Does not include alpha-fetoprotein.

Clinical Utilities

CPT Codes
88235/Tissue culture for amniotic fluid 88269/Chromosome analysis, amniotic fluid 88280/Chromosome analysis; additional karyotypes, each study 88291/Interpretation and report

The CPT codes provided 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 payer being billed.

Reference Range
46,XX or 46,XY.  No apparent chromosome abnormality.
Photograph of the representative karyotype.      

Component Information

Collection Notes

Additional Comments

 

Questions or Comments email support@mgh.org

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