Test Catalog

Test ID: CHRAF    
Chromosome Analysis, Amniotic Fluid

Useful For Suggests clinical disorders or settings where the test may be helpful

Prenatal diagnosis of chromosome abnormalities, including aneuploidy (ie, trisomy or monosomy) and balanced rearrangements

Genetics Test Information Provides information that may help with selection of the correct genetic test or proper submission of the test request

Cultures from this specimen will be discarded 10 days after all cytogenetic test results have been reported. If further testing is desired, call the laboratory at 507-284-1668.

Reflex Tests Lists tests that may or may not be performed, at an additional charge, depending on the result and interpretation of the initial tests.

Test IDReporting NameAvailable SeparatelyAlways Performed
_ML15Metaphases, <15No, (Bill Only)No
_M15Metaphases, 15No, (Bill Only)No
_MG14Metaphases, >15No, (Bill Only)No
_COL1Colonies, 1-5No, (Bill Only)No
_COL6Colonies, 6+No, (Bill Only)No
_KTG1Karyotypes, >1No, (Bill Only)No
_STACAg-Nor/CBL StainNo, (Bill Only)No

Testing Algorithm Delineates situations when tests are added to the initial order. This includes reflex and additional tests.

This test includes a charge for cell culture of fresh specimens and professional interpretation of results. Analysis charges will be incurred for total work performed, and generally include 2 banded karyograms and the analysis of 20 metaphase cells. If no metaphase cells are available for analysis, no analysis charges will be incurred. If additional analysis work is required, additional charges may be incurred.


The following algorithms are available in Special Instructions:

-Prenatal Aneuploidy Screening and Diagnostic Testing Options

-High-Risk Pregnancy Based on Fetal Malformations or Positive Serum Screen: Laboratory Testing Algorithm

Special Instructions Library of PDFs including pertinent information and forms related to the test

Method Name A short description of the method used to perform the test

Cell Culture Followed by Chromosome Analysis

NY State Available Indicates the status of NY State approval and if the test is orderable for NY State clients.


Reporting Name Lists a shorter or abbreviated version of the Published Name for a test

Chromosomes, Amniotic Fluid

Aliases Lists additional common names for a test, as an aid in searching

Amniotic Fluid, Chromosome Analysis
Chromosome Analysis, Amniotic Fluid
Karyotype, Amniotic Fluid
Prenatal Chromosomes, Amniotic Fluid
Fetal Aneuploidy
Fetal Chromosome Analysis
DNA Screening for Fetal Aneuploidy