Most recently I sent in two samples to OAI. Using the UPS prepaid, I took the samples into work with me on Monday morning (UPS picks up every afternoon). Tracking reveals they were both delivered Wednesday morning. I got one result back on Thursday evening at 6:30pm and the 2nd result I got Friday morning at 4:10am. It appears from the times I get those results that they work multiple shifts, which helps speed their turnaround time.
The last several samples I sent to Blackstone took at least 4 days to deliver (USPS), a week longer for Blackstone to show it as received in their system, and another ~10 days to get results back from them. Roughly 20 days from mailing the sample to getting results vs 4-5 days for OAI. And when I get the results emailed from Blackstone, it's always between 4:30-5:00pm. As if they email their results out at the end of their work day, regardless of what time during the day the sample was completed. The fact that OAI is sending me results as late as 7pm and as early a 4am tells me they have people working at all hours of the day and they won't hold a sample all day to send it out before they go home at 5pm.
The interesting thing is Blackstone and the OAI lab I send to are both in Indiana, a very similar distance from me.
The last several samples I sent to Blackstone took at least 4 days to deliver (USPS), a week longer for Blackstone to show it as received in their system, and another ~10 days to get results back from them. Roughly 20 days from mailing the sample to getting results vs 4-5 days for OAI. And when I get the results emailed from Blackstone, it's always between 4:30-5:00pm. As if they email their results out at the end of their work day, regardless of what time during the day the sample was completed. The fact that OAI is sending me results as late as 7pm and as early a 4am tells me they have people working at all hours of the day and they won't hold a sample all day to send it out before they go home at 5pm.
The interesting thing is Blackstone and the OAI lab I send to are both in Indiana, a very similar distance from me.