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comment_71456

Hello All,

I am trying to revise our Blood bank policies and wanted to make some desirable changes in practice. We have been ordering " Antigen Tested Units " from our Blood supplier and have been repeating antigen testing in house to confirm them. I am not sure if we are required to repeat the testing because of regulations? I do not want my staff to repeat the testing. Can someone please enlighten me with details? Thanks in advance for your time.

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  • There are two types of "antigen negative" units we can get from our supplier here in Michigan.  One is "historically negative" -- those have to be retested when they arrive.  The other type is "confir

  • Carrie Easley
    Carrie Easley

    Our policy as well.  

  • Christy Spence
    Christy Spence

    This is our policy as well.

comment_71457

  When we order antigen testing, we don't re-test the unit. We do order historically tested units from our blood supplier and then we test it.

comment_71462

 

2 hours ago, Kathyang said:

When we order antigen testing, we don't re-test the unit. We do order historically tested units from our blood supplier and then we test it.

That's what we do as well.  If the unit comes from the supplier with an antigen test result on a separate tag, we do not retype it.  We also get a historical database from our supplier to test our own units.

comment_71463

There are two types of "antigen negative" units we can get from our supplier here in Michigan.  One is "historically negative" -- those have to be retested when they arrive.  The other type is "confirmed" -- those units have been confirmed negative for a particular antigen at the supplier and do not need to be retested here.

Scott

comment_71464
48 minutes ago, SMILLER said:

There are two types of "antigen negative" units we can get from our supplier here in Michigan.  One is "historically negative" -- those have to be retested when they arrive.  The other type is "confirmed" -- those units have been confirmed negative for a particular antigen at the supplier and do not need to be retested here.

Scott

Our policy as well.  

comment_71467
3 hours ago, SMILLER said:

There are two types of "antigen negative" units we can get from our supplier here in Michigan.  One is "historically negative" -- those have to be retested when they arrive.  The other type is "confirmed" -- those units have been confirmed negative for a particular antigen at the supplier and do not need to be retested here.

Scott

This is our policy as well.

  • Author
comment_71473

Thanks much for all the information. This Blood Bank community is of immense help & I really value your opinion. I am fairly new at my job as a Lead and counting on you for advice. 

comment_71490

We test if the patient already has the antibody.  We've had units come in that were marked one thing but were actually the opposite. 

comment_71492
1 hour ago, Baby Banker said:

We test if the patient already has the antibody.  We've had units come in that were marked one thing but were actually the opposite. 

That is terrible - absolutely unacceptable.

comment_71493

In UK we don't have to worry about retyping donor unit. Our national blood service give 100% assurance of their testing. 

comment_71509
On 11/9/2017 at 7:36 AM, SMILLER said:

There are two types of "antigen negative" units we can get from our supplier here in Michigan.  One is "historically negative" -- those have to be retested when they arrive.  The other type is "confirmed" -- those units have been confirmed negative for a particular antigen at the supplier and do not need to be retested here.

Scott

We do it this way also. 

comment_71512

AABB standard 5.13 states

5.13 Serologic Confirmation of Donor Blood Red Cell Antigen Other Than ABO/Rh

Red Blood Cells products labelled as negative for red blood cell antigens other than ABO and RhD do not require repeat testing for the labeled antigens

comment_71513
10 minutes ago, Marianne said:

AABB standard 5.13 states

5.13 Serologic Confirmation of Donor Blood Red Cell Antigen Other Than ABO/Rh

Red Blood Cells products labelled as negative for red blood cell antigens other than ABO and RhD do not require repeat testing for the labeled antigens

The above is interesting, and it is found under Transfusion Services standards.  Under collection facility standards, 5.8.4 says that untested units for "other" antigens may be labeled negative only if units from two previous donations were tested  by the collection facility.  Does anyone get this kind of information from their blood supplier?  We just either get a "confirmed negative" or a "historical negative" label, with the historical label specifically stating that confirmatory testing must  be done.  So I guess we are stuck with that.  Not really much of an issue here though!

Scott

comment_71516
14 minutes ago, SMILLER said:

The above is interesting, and it is found under Transfusion Services standards.  Under collection facility standards, 5.8.4 says that untested units for "other" antigens may be labeled negative only if units from two previous donations were tested  by the collection facility.  Does anyone get this kind of information from their blood supplier?  We just either get a "confirmed negative" or a "historical negative" label, with the historical label specifically stating that confirmatory testing must  be done.  So I guess we are stuck with that.  Not really much of an issue here though!

Scott

Is that collection facility standard referring to the actual product label, and not a hang tag or other type of tag?

comment_71518

Right.  They also have to include things like expiration date. product code, etc. So between the tag from us and they label already on the unit, I guess it is all covered.

Scott

comment_71523

We do the antigen testing for units ordered from our blood service.  We have found units that were supposedly negative for an antigen but actually positive.  We also are required by our computer system to enter the antigen testing results for a unit before it will allow the selection of that unit to a patient with the corresponding antibody.  

comment_71529
19 hours ago, BldBnker said:

We do the antigen testing for units ordered from our blood service.  We have found units that were supposedly negative for an antigen but actually positive.  We also are required by our computer system to enter the antigen testing results for a unit before it will allow the selection of that unit to a patient with the corresponding antibody.  

How do you handle those that you don't have antisera for - like Vel for example?

comment_71532
4 hours ago, AMcCord said:

How do you handle those that you don't have antisera for - like Vel for example?

I am glad you asked that AMcCord!  I was going to ask the same, but thought I might be accused of going over the top.  Now I would have felt justified.

comment_71575
On 11/14/2017 at 9:17 AM, Marianne said:

AABB standard 5.13 states

5.13 Serologic Confirmation of Donor Blood Red Cell Antigen Other Than ABO/Rh

Red Blood Cells products labelled as negative for red blood cell antigens other than ABO and RhD do not require repeat testing for the labeled antigens

Based on these standard we stoped retyping the units but we have internal process to check the clerical entry by our staff.

comment_71576
On 11/14/2017 at 9:34 AM, SMILLER said:

The above is interesting, and it is found under Transfusion Services standards.  Under collection facility standards, 5.8.4 says that untested units for "other" antigens may be labeled negative only if units from two previous donations were tested  by the collection facility.  Does anyone get this kind of information from their blood supplier?  We just either get a "confirmed negative" or a "historical negative" label, with the historical label specifically stating that confirmatory testing must  be done.  So I guess we are stuck with that.  Not really much of an issue here though!

Scott

This standard is for collection facility and based on these standard BBTS standard was updated and stated that we do not need to retype the unit...

comment_71578

Right.  But please look at AABB standard 5.8.4.  As I mentioned above, the donor processing facility can only label a unit as tested negative (far a particular antigen) if that has been done on two separate occasions.  In that case, or if the unit in question was tested by the donor facility, the donor facility could indeed label the unit as "negative for RBC antigens".  Otherwise, it would have to be tested, either by the donor facility or when it reaches your blood bank.

After all, every donation by a donor is typed twice for ABO before a patient gets it.

Scott

comment_71591

Same as Eagle Eye and we just had a patient with Anti-Vel last month. Would not have been able to retest the units sent by our blood supplier.

  • 3 weeks later...
comment_71806

We have the ability to program our system to accept "untested" units for selection for antigens that do not have available anti-sera, like Cob, Bga, or Vell etc.   We use SoftBank.  

  • 3 weeks later...
comment_71940

We don't retest because we do not have the antisera.  So far we have not had any issues.  We only stock Rh, K, FyA and JkA.  

  • 4 weeks later...
comment_72267
On ‎11‎/‎10‎/‎2017 at 12:38 PM, Malcolm Needs said:

That is terrible - absolutely unacceptable.

Yes terrible.  I am hoping this was reported by the FDA by the blood supplier.  Scary.  @Baby Banker This should never happen ever.

Edited by Gnapplec

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