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Hi Sonya, The DIAMOND symbol that prints on an ISBT128 Full Face label is a new added feature in the HemaTrax UNITY v9 (Integrated and Standalone). It's a scanning guide to decode all printed ISBT128 barcodes on a Full Face label in one trigger press. This feature, however, requires the use of a specific HemaTrax supported 2D barcode scanner -- Zebra DS8100. The feature can be easily disabled from the "HemaTrax Print Server Settings" module following the steps below (see attached picture): - Uncheck the "Print AIM Spot in the ABO-Rh quadrant." checkbox - Click "Save". - Restart the "HemaTrax Print Server" service from the Control Panel - Administrative Tools - Services. I hope the above information helps but you can always contact the Digi-Trax support team if you need additional help. Kind Regards, Digi-Trax Technical Support

I just answered this question. My Score PASS  

Wow, since retirement and having time to review past posts, I found a missed opportunity to respond to Galvania's comment on my LISS/gel column comparison. I agree they are different "methods" however, atigen- antibody reactivity does take place in an ionic environment. That being said, the LISS tube test requires manually added LISS, while the column technologies the gel or bead matrix is prepared by the manufacturer for you. I haven't seen the actual composition of the different column matrixes and their ionic strength, but they must have one. Although, in the late 80's we could actually make our own columns, as originally described by LAPIERRE, and then by Luc Noel in " Micromethods en Immuno-Hematologie", Societe Nationals De Transfusion Sanguine, 1989. And even the tube LISS test can be improved by using a lighter red cell suspension and having a better serum to red cell ratio. If only our eyes were better! The standardized micro column matrixes have made this easier to read and sustain the agglutinates for longer readings. Oh, and no more subjective shaking the tube! It is nice that standardized pre-prepared tests cards/strips, cell suspensions are available to provide better reproducible tests among staff. So back to my comment and keep in mind that I'm just old and opinionated these days, I still look at the gel/bead columns as modified miniature LISS tube tests with basically the same principles as the standard LISS tube test when antigen-antibody reactions are the subject. At least that's what we thought when we made our own columns. So I hope we can respectfully agree to disagree.

I agree with exlimey. I once had an anti-E that reacted by LISS IAT, but try as we might, we could never get it to react with papain-treated red cells. We doubted the specificity, and so we sent it to Joyce Poole at the International Blood Group Reference Laboratory to have a look at it, and she confirmed both the specificity and the fact that it was non-reactive with papain-treated red cells. Anything is possible, as the antibodies refuse to read the damned text books! In the UK, it is almost a sine qua non that an "enzyme panel" is put up simultaneously with the IAT panel John, so I would almost certainly have done the same as DCeDCe.