edralyn Posted September 21, 2012 Share Posted September 21, 2012 I just want to know if what other facilities do if they have a big change in MCV result Link to comment Share on other sites More sharing options...
SMILLER Posted September 21, 2012 Share Posted September 21, 2012 Since indices normally change very little, we would suspect a mislabeled specimen and follow up. If the last result was recent that is.Scott Link to comment Share on other sites More sharing options...
Mabel Adams Posted September 23, 2012 Share Posted September 23, 2012 Or look for a recent transfusion in a patient that previously had a more abnormal MCV. Or a new cold agglutinin. Seems to me I remember seeing specimens contaminated with glucose where the red cells swelled and gave a big MCV (or was that shrunk). Later, this affect in the specimen would disappear as the osmotic processes evened out I think. Link to comment Share on other sites More sharing options...
Likewine99 Posted September 23, 2012 Share Posted September 23, 2012 Same as SMILLER. We have also taken both specimens and done a quick ABO/Rh and if they were different, notified the collector of the second specimen that we "have reason to believe" that the second specimen may be mislabeled. Link to comment Share on other sites More sharing options...
SMILLER Posted September 24, 2012 Share Posted September 24, 2012 It seems like the odds are not too bad that any two people would have the same ABO/Rh.We do do a ABO/Rh, but only to help verify a misdraw for a write-up. This si becuase if the typings are the same, it does NOT necessarily mean that they are the same patient! If the two CBCs match (or the Chem profiles) then we would consider it the same patient.Scott Link to comment Share on other sites More sharing options...
rravkin@aol.com Posted October 24, 2012 Share Posted October 24, 2012 Four primary reasons for MCV delta are fliud gain/loss, and/or rcb transfusion, and/or mislabled specimen, and/or specimen contamination. We will call the floor and confirmed IV fluid gain, or loss; check BB record for recent transfusion; if necessary confirmed correct specimen with ABO type comparing to a previous specimen. Link to comment Share on other sites More sharing options...
sbennett Posted November 2, 2012 Share Posted November 2, 2012 If the person has not had a recent transfusion I am asking my techs to have thespecimen redrawn. We have seen a recent increase in delta checks on our MCVs and most of them I think are due to IV contamination. Link to comment Share on other sites More sharing options...
sbennett Posted November 26, 2012 Share Posted November 26, 2012 We also ended up calibrating our LH 750s after a string of MCV deltas so instrument calibration can also be a factor. Our instruments are old and soon to be replaced but it is still a possibility. Link to comment Share on other sites More sharing options...
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