I used this service for my first time with an ELISA assay for detecting anti-HBs antibodies by Enzygnost HBV Ag/Ab 5 kit. CTL was able to complete it within 3 days (the standard turnaround time) for me even though they were working with another client at that moment. The price is also reasonable as compared to other similar companies which charge more than double the amount. Nothing much about their work experience or expertise. They did everything correctly without any issues. Just keep up communication between you both so that things could be done timely. We needed some extra time because another project had priority over us but we managed to do some data collection as well during that period.