Awesome. Thank you for sharing!Dimer (not dimmer) refers to the % of high molecular weight proteins, basically rhGH polypeptides that have "aggregated" together (i.e., dimerization), which reduces their "cleanly" binding the GH receptor for activation.
@janoshik was kind enough to review a section of Bolus aimed at explaining clearly the Reports from reputable HPLC services, particularly his service, so there's a Practical subsection about the particularities of these Lab Reports that gives more detail. But this should suffice for passive readers.
So essentially high dimmer just reduces binding affinity and doesn’t appear to present a health risk.