Both
@saltyfins and I sent via USPS and it looks like our samples got “lost”. I will give MR the benefit of the doubt for now but I have never had USPS lose anything I have ever sent. Never had this issue with any of the other ICP providers regardless of whether they include a prepaid USPS mailing label (eg, ATI) or I had to make a label myself.
I sent out out ICP-MS tests to Modern Reef and ATI the exact same day and I got my results back from ATI in 8 days whereas I have been waiting for almost three weeks for MR and they apparently haven’t even received the sample.