verajerdon

We do not test are cord bloods using a EDTA purple top tube we get the cords in a blue cord blood tube. We have a cell washer and we even add extra manual washing steps so I do not believe that to be the issue. The same tech with the previous negative results came back in and repeated the test exactly the way they did it that day and got a positive result.

Two days ago a tech put in that a cord blood was negative and two days later the Doctor calls and asks for it to be rechecked. So we test from the same cord blood tube it was a 2 plus positive. The original tech swears that it was negative and they tested it right after they recieved it and even double checked it. The original tech also redid the specimen today on the same tube and saw that it was now a 2 plus reaction. This also happened with another tech on another shift. They called one negative and a Doc called five days later and asked for it to be rechecked. In that case it something like a 4 plus positive. Is it possible that the reaction is showing up stronger after the specimen is getting older???