What dose are you currently taking? Vials can hold 3ml.
By filtering you're eliminating immune reaction inducing protein aggregates, as well as particulates (glass, stopper rubber, etc) which further increase the immune response.
This vial appears crystal clear to the naked eye:
View attachment 316326
Immunogenicity causes antibodies to develop against the peptide, clearing it from the body more quickly, reducing its effectiveness. Over the long term, you can develop a long lasting, even permanent reduction in effectiveness.
In essence, protein aggregates turn the peptide into a "vaccine" like form, causing you to develop an immunity to it.
There are rare, much worse consequences, like the potential of developing cross immunity to the natural hormones Tirz is replicating, but the loss of effectiveness is the most likely risk.
Here's a FDA produced chart of GLP drugs tested for their immunogenic reactions. The samples on the left of each chart are pharma. The two on the right are compounders (ie, legal UGL). As you can see, the immune response to the non-pharma GLPs is as much as 2000x stronger.
The chart on the right shows the impact of filtering. In one of the two non-pharma samples, filtering reduced immunogenicity by 80%, which would help preserve its effectiveness.
View attachment 316324