Test Catalog

Test ID: MULT    
Zygosity Testing (Multiple Births)


Determining genetic risk for an individual whose twin or triplet is affected with a genetic disorder for which a specific genetic test is not available (or such testing is uninformative)




Organ or bone marrow transplantation compatibility testing


Familial or parental interest


DNA from twins and their parents is used to determine if the twins are identical (monozygotic) or fraternal (dizygotic).


Test IDReporting NameAvailable SeparatelyAlways Performed
CULFBFibroblast Culture for Genetic TestYesNo
CULAFAmniotic Fluid Culture/Genetic TestYesNo
_STR1Comp Analysis using STR (Bill only)NoNo
_STR2Add'l comp analysis w/STR (Bill Only)NoNo





Polymerase chain reaction (PCR)/microsatellite markers are used to provide a genotype for multiples and their parents to determine if siblings are monozygotic twins.




Zygosity Testing (Multiple Births)


Identical Twins
Multiple Births