I have never waited more than 2 weeks from mailing to the report in my inbox. I am in eastern Iowa so not sure if that helps with the mailing to Indiana or not...
My last two samples were 10 days from mailing to getting the report. That was one in February 2020, pre-Covid and one in July 2020 post Covid. I use the little black bottles they send me in the mail and don't seem to have any issues.
I placed my Blackstone mailer on the counter of a Seattle area post office on the morning of October 27. Received email pdf results yesterday, November 13. So thirteen business days and considering the volume of mail-in ballots during that period I'm pretty happy. (And very happy there is virtually no fuel in my oil.)
I sent an oil sample in on 11/6, they received it 11/10 according to the tracking by USPS. They charged my cc on 11/18 and I still have not received the results by email. I called them and they don't know why I'm not getting the email. I gave them another active email and still nothing. And no it didn't go to the junk mail file on either account. I get many emails daily on both the accounts. I'm going to ask them to snail mail it, it's faster than their email .