How do you interpret an ABO\Rh type when mixed field reactions are detected? A known B neg patient had to receive B positive rbcs. When the next sample is typed the Rh reacts 2+mixed field. Do you interpret as B Pos with a note as to why the Rh changed without changing patient's demographics to Rh pos or as B Neg and a note to explain the mixed field reactions. We currently interpret as Rh pos with a note "patient is B negative and has received rh positive rbcs and keep the pt's demographics as Rh negative.

We would report out the type as B Neg with "internal" comments explaining the reactions.

We wouldn't want to confuse any nurses or doctors (for that matter) with comments about reactions or changing of blood types

We had this happen just recently and we reported out the patients type as Rh pos, left the demographic type as Rh neg, and footnoted like crazy to explain the reasoning behind all the madness.

We also interpret as B neg but would footnote to explain the discrepancy

We would invalidate the current interpretation with a note saying the patient had been recently transfused with D+ cells.

BC

We also would report the D type as invalid and leave the permanent record as Rh negative.

We would report as B neg, with an internal comment explaining the discrepancy.