There are reports of clinics in London, UK, who have used therapeutic drug monitoring (TDM) to confirm that the drugs are in present (and in effective/safe amounts) in the blood of people who are taking generic PrEP which was ordered online. There have been no reports available to-date of TDM revealing counterfeit or faulty generic PrEP. The use of TDM for this purpose in BC is currently being done as a part of a research study **see 11-Jun-2017 update below**
UPDATE 03-Sep-2016: The HIV/MSM clinic 56 Dean Street in London, England, has published a summary of results of TDM on 162 blood samples by patients on generic PrEP (including Ricovir-EM). They reported zero counterfeits. Click here to read the summary.
UPDATE 26-Oct-2016: At the International Conference on HIV Drug Therapy in Glasgow, a researcher from 56 Dean Street presented data showing adequate blood levels of drug among 234 patients who purchased generic PrEP online. Though this did include Mylan’s Ricovir-EM, most samples were of Cipla’s Tenvir-EM.
UPDATE 07-Nov-2016: There are reports of half a dozen Vancouverites taking Ricovir-EM who have had TDM through St. Paul’s Hospital — all with good results. There is no official channel through which generic PrEP users can access TDM yet, but talks are underway. Ask your doctor (and stay tuned!)
UPDATE 26-Mar-2017: We've posted the batch certification supplied by Mylan for for the current lot of generic emtricitabine/tenofovir being distributed (lot 3061516, exp Nov-2019). You can view it here: Page 1 and Page 2
UPDATE 22-Apr-2017: 56 Dean Street presented this poster at the British HIV Association conference, showing TDM data on 277 patients using generic PrEP.
UPDATE 11-Jun-2017: a research study measuring drug levels of generic PrEP has launched in Vancouver. Click here to learn more.