A2 patients

[Dawn]

How do you report the ABO group for patients that are A2?

[Trek Tech]

We report them as A. In our special needs field we instruct the techs to set up type O blood.

[bbkdiane]

I agree with reporting the A2 patient as 'A' with some type of warning message to use group 'O' donor blood. The A2 nomenclature relates to the fact that we found the non agreement in the reverse group test and were obligated to figure out that the culprit was Anti-A1. Physicians are not used to seeing subgroup designations and when some other lab has no problem typing the patient and just calls them an 'A', the physician will be confused and call in a hematology consult! (don't laugh). If the computer history has A2 documented, future testing may not reveal the antibody and the tech may be confused with what to record (think 3AM stat). A designation of 'A' with the note to use group 'O' is the absolute easy way out..and sometimes easy is safer.

[Kent]

We report the "A2" patient as "A". Usually the anti-A1 in these patients does not react at 37 C. We only apply the restriction of group "O" transfusions to those few patients that do show reactivity at 37.

[rknan]

In Blood Group 'A' THere are many Subgroups for which Anti Sera for all Sub Groups are not available. Only Anti A1 Lectin is available with which we are able to identify Only A1. If the reaction Is negative peoplre call it as 'A2'. Which is not acceptable. In such cases If the reaction is Positive with 'A1" Lectin Group is 'A1'. If the reaction is Negative this can be called as other than Group'A1'

For tranasfusion purposes proper compatibility Testing should be followed and If this is O.K. Transfusioncan be given

[Sandy Smietana]

We also report the patients as Group A and will crossmatch Group O if Anti-A1 is present, otherwise we use Group A red cells.

[johna]

We would only recognize an A2 if there was a reverse group discrepancy due to anti-A1. In that case we would issue a comment in the report indicating: "The patient appears to belong to the subgroup A2 and has anti-A1 present". Any subgroups lower than A2 should be easily recognized because of their very weak reactivity which is occasionally mixed-field (A3).

[ejcosta]

We report them as "A" and give some tip that tgese may have a subgroup of A profile.

[Yanxia]

We don't use anti-A1 except the appearence of

discrepancy in the blood group test, so some A2 may be reported as A.

But when we have a negetive result with anti-A1 and a reaction which is stronger than 2+ with anti-A, we will report it as A2.

[irshadaad]

we will transfuse only in case the pt hase ant A1....not all A2 case produce ant-A1

[adiescast]

We report them as type A. If they have an anti-A1, which is the only reason I can think of that you would call someone an A2, we report that as an antibody.

[Malcolm Needs ☆]

We report them as type A. If they have an anti-A1, which is the only reason I can think of that you would call someone an A2, we report that as an antibody.

Same here.

[skyanto]

In my lab we do the subgroups A1 and A2 to all new donors and we report them A1 or A2.If we have a donor or a patient A2 with anti-A1 we report the group A2,the alloAb anti-A1 and we put in a special field a warning message.

Edited July 22, 2009 by skyanto

[Malcolm Needs ☆]

In my lab we do the subgroups A1 and A2 to all new donors and we report them A1 or A2.If we have a donor or a patient A2 with anti-A1 we report the group A2,the alloAb anti-A1 and we put in a special field a warning message.

How many cases of anti-A1, reacting strictly at 37oC, do you think you have seen?

:confused:

[skyanto]

I remember only one case.

[Malcolm Needs ☆]

I remember only one case.

Then, with all due respect, why did you put warning fields on those that had an anti-A1 that did not react at strictly 37oC?

Anti-A1, reacting at a lower temperature than 37oC, has not been reported as being clinically significant.

:confused: