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We have a couple of different ways we do it depending on the test. We only do 5 patient samples spanning the range for most assays. ACT's and Hepcon tests we use QC samples on each device (excluding iSTAT ACT's which we use the 6 month internal simulator as a comparison of all "readers" and then use a single device to test against the Hepcon with a patient sample). For PT/INR's, we review monthly any samples run POCT and in the core lab within 30 minutes as our correlation.
We don't. That would be an impossible task due to the variability of the ACT's. The Cath lab orders their own Avox supplies, so we just emphasize that they do QC and make sure the calibration path is entered if different. In 20 years, it has not come up as an issue by either CAP or TJC.
In my POCT career I've used all of the middleware products and your best bets for flexibility of devices is either Telcor or RALS. We currently have Gluocse, Hemocue, I-STAT, Hepcon, Medtronic ACT Plus, DCA Vantage and the Clinitek connected to Telcor. It is very helpful as we are a 1000 bed hospital. The problem with vendor specific systems (such as Pweb) is that they claim they can connect any vendor, but our experience was that it is never completely true. Best to go with a neutral party.