It depends heavily on how stable each peptide is and how long ago they were mixed. TB-500 and GHK-Cu seem fairly stable from what I recall, though I lack references and feel less sure about the rest. Some loss has probably occurred. Enough to change doses or toss them? Probably not. If they still look clean I would just keep using them normally.
I left my reconstituted peptides sitting out unrefrigerated overnight by mistake for eight and a half hours. They stayed inside a container away from light at about 74 degrees. The ones affected were Mot-c, HGH, TB500, GHK-cu, semaglutide, and DISP. Any way to know whether they suffered any breakdown?