The Legal Twin Zygosity test, conducted by Advanced Paternity is closely monitored for the requirements of the chain of custody so that its results can be used as valid evidence in court both locally and internationally. This is the simplest option to determine a genetic relationship with the utmost certainty. There are numerous trials in court in which the results can be used as evidence to support a claim, such as fights over custody, child support cases, inheritance disputes, government proceedings, etc.