How a therapeutic antibody is metabolized in the body is pertinently relevant to its efficacy. Therefore, pharmacokinetics study is an important part of the drug development. PD-1 is probably the most targeted molecule in today’s pharmaceutical industry, thanking to the clinical success of Keytruda and Opdivo. Many investigational anti-PD-1 mAbs are being developed. There is a growing need for a standard assay that can be used to facilitate the study of their pharmacokinetics. 
Reconstitution
See Certificate of Analysis for details of reconstitution instruction and specific concentration. 
Storage
 Upon receipt, please store all items at -20℃.

After reconstitution, the stock solution should be kept at -80℃.