After checking out the site, its clear that yourinflows marketing practices leave a lot to be desired. Obviously they need to do some serious researching on urine drug testing and how the process works. Because if theyd done their research, they would have learned that a lack of foam or odor can be present in some human samples regardless of gender. If a collector performs a "shake test", they are not trying to determine gender; they are looking for any excessive foaming as a result of using adulterants or if a donor is trying to use heated Mountain Dew or Mello Yello as a urine substitute. A lack of foam is not a concern for the collectors.
Because a lack of odor can be present in human urine, it is not a concern and collectors are not gonna arbitarily sniff every urine sample thats placed in their hands. However, red flags are raised if a collector catches an obvious whiff of any foreign odor that is not supposed to be present in human urine (i.e; bleach, household chemicals, etc).

Its understandable that yourinflow wants to sell their products, but resorting to misinformation as a tactic to justify the higher cost of their synthetic brand over other brands is a bad idea.