JasonS

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Congratulations! Much deserved!

I've never entirely understood their purpose either. We have a commercial control which we use with our classic re-usable hemocytometers. We use a homemade stain for our counting. Yes, if a tech tends to count somewhat higher/lower than their peers they risk failing QC. This would also include variables for doing the setup such as overfilling the chamber, poorly cleaned chamber, or poor mixing(Since we use a stain). You could argue that since the QC is done once a day, that a competent tech would pass the QC, and later on a less competent tech would set up a body fluid and do it with poor accuracy(They're not doing QC so this can't be assessed). In my case you could say the QC proves the stain is working properly though in my experience our stain can be used for months and have no stability issue. It would also help prove that the hemocytometer they used is in satisfactory condition(We would use 2 hemocytometers for daily QC and we have 10 in use, so we might not QC each individual one every week since there is no plan for rotating them). So we are kind of proving that some of the systematic parts of the fluid counts are working properly(but not all of them) and proving that at least one of the techs is counting properly.

In theory the "classic" situations with acute pain are an Acute Hemolytic Reaction(as mentioned above). I have also never seen one of these practice. Have you repeated the crossmatch with the unit and a new sample? Have they done bloodwork for hemolysis markers? The pain could always be due to one of the other common transfusion reaction causes(not everything presents in textbook fashion), or not due to transfusion at all.

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We will test any antibody panel on receipt with a diluted version of a commercial anti-sera (Such as anti-K).

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1. Babies of Rh negative moms. 2. Reflex testing from cord bilirubin >150 umol/L 3. Any others upon request. This system doesn't seem to cut down much on the amount of ABO/DAT we do on babies to Rh Positive moms since nurses will order it most of the time anyway. I would like to hear a physician's input on their reasoning behind ordering them and what the results would do to influence their clinical decision making.

Haven't had to do this since I was a student so cut me some slack if I make a mistake here So we want to find out how many years "x" it takes for Company A/B to be equal. So... 275 + 6500 + 1600x = 1300 + 7000 + 1000x 6775 + 1600x = 8300 + 1000x 1600x - 1000x = 8300 -6775 600x = 1525 x = 2.54~ The question asks how many years after the initial year. Since this equation takes into account the initial year just do 2.5 years - 1 year = 1.5 years So the answer is B