compatibility testing

ABO

blood component that causes most severe tfxn rxns

2

number of forms of identification needed to verify patient

3

number of calendar days sample drawn before intended tfxn stays good

yes

yes/no

blood bank requires info on sample:

-2 forms pt id

-date and time of collection

-phlebotomist initials

donor segment

pulled from unit to crossmatch cells with pt plasma

Kidd

Ab that may not demonstrate presence of due to labile nature

AHG

phase you must do crossmatch in even with Ag neg blood

neg

Rh pos/neg blood is retested at hospital

ABO, Rh

blood groups retested at hospital

weak D

testing required for donor cells but not for recipient 

ABO, Rh (fw, rev)

testing done on pt sample

-must concur and discrepancies must be resolved

neonates (<4 mo)

rev ABO not done on these pts

37, AHG

incubation and phase required for detection of clinically significant Ab in pt plasma

pooled

pooled/unpooled cells not acceptable for transfusion recipients

check cells (coombs cells)

added to make sure that all negative tests had AHG added and that it works

ABO, Rh, Kell, Duffy, Kidd, SsU

always significant Ab

Lea, M, N, P1, Lu, Cw

sometimes significant Ab

f, Cw, V

low frequency, significant Ab (Rh group)

cryo, FFP, PLTs

blood products can be administered regardless of Rh type

RBCs, grans

blood products that require Rh compatibility

units to screen

calculation using frequencies of Ag prevalence to find number of … to find a given number that is negative for that/those Ag

immediate spin (IS)

crossmatch type detects ABO incompatibility and RT reactive Ab

-only req crossmatch as long as Ab screen neg and no hx of clinically signif Ab

AHG

crossmatch type required if hx of clinically signif Ab and/or pos screen

no

yes/no

AHG crossmatch and auto control are required by regulation regardless of pos screen and hx of clinically signif Ab

electronic

crossmatch done without serologic testin

-must have at least two types in system for pt

-done if no hx Ab, neg screen, and have two types in syst from two sep occasions

1-6 (7)

temp and time (days) to keep donor and pt sample post-tfxn

emergency release

-administration of uncrossmatched blood prior to Ab screen or crossmatch

-req statement signed by physician requesting unit

-req pos ID of pt

-O neg or pos

-will only give type specific after WE do testing on their blood in lab (no reliance on ID, dog tag, etc)

10

maximum temp blood for emergency release can reach before not ok to refreeze

no

yes/no

a crossmatch is required for autologous tfxn

fw

only fw/rev ABO testing done on neonates <4 mo

Ab

in mom’s plasma but not baby’s, so used as sample for neonate tfxn testing because it contains …

twice (bb, bedside)

number of times to verify info before bedside tfxn

-pt name

-pt ID number

-pt ABO and Rh

-unit expiration

-statement of compatibility

2-3 (4)

time for typical tfxn (and time must not exceed)

yes

yes/no

tfxn is stopped if pt has rxn to tfxn