Is Ovitrelle
recombinant HCG? If so, I am not sure the recombinant form would be analagous to non recombinant lyophilized HCG generics in terms of dilution.
Lyophilized apparently can be diluted to different concentrations depending on use. I buy Corion which comes with solution and instructions to mix at a much higher concentration which is typical for use for fertility, not as adjunct for TRT. However I dilute it with bacteriostatic diluent to lower concentration for my smaller dosage.
It has been stated by
Empower pharmacy on this forum that their freeze dried material is the same as big pharma produced versions. Compounding pharmacy versions are typically diluted to 100iu per ml.
So it appears that there is a pretty wide range for lyophilized HCG dilution.
It seems the most important factor is if you are going to store for multiple doses, use bacteriostatic water or sodium chloride as diluent. Without the benzyl alcohol bateriostatic agent, there is no inhibition of bacterial growth in the solution once the amp or vial has been opened.
(Note, this is my outlook and my practice based on available information, it is not confirmed by written instructions with the Corion. This logic may not apply to the specific product you are asking about).