history check
When is a history check performed?
When processing any order.
(t/s, ABORh R, DAT, blood product request)
What type of patient is a RHIG workup ordered for.
Pregnant women
When is it necessary to run a cord blood workup?
When mother is type O or Rh negative
A Neg / O Neg
When is Rack QC performed?
daily
Give an example when a deeper dive into patient history is necessary.
ABO descrepancy
What blood types receive RhoGam?
Any Rh Negative blood type
What test are included in a cord blood work up?
ABO RH (front type) and DAT
How old can a T/S be to be considered valid for crossmatching?
up to 72 hours
name 3 reasons for a specimen rejection
hemolyzed
no PPID
no PAID
How many systems do we perform patient history checks?
2
MHS Genesis and legacy (DataArrk)
When is a KB test indicated?
When there is a postive FMH result.
what addition test is need for a RH negative cord blood work up?
Weak D testing
how many abo histories is needed to perform a crossmatch?
1 ABORh history plus one current T/S
what is the grade reaction for several large aggregates with clear background in tube method?
3+
How is a history check performed during downtime?
All paper documents are checked.
check cabinet for yellow card
check all binders for patient records
check special requirement binder
What test are included in a RHIG work up for pregnant women post delivery?
t/s and FMH
What are 2 possible causes of a positive DAT?
Mother/ baby ABO incompatibility
Mother has clinically significant Antibody
If a patient has a postive antibody screen, what should be done before crossmatching any units.
ABID
Phenotype patient if first time being ID'd
if clinically significant screen units for antigen negative units
You have a positve DAT. What is the process called when you perform testing to identify if the DAT is positve due to complement or IgG antibodies?
Fractionation
name 1 potential consequences of not performing patient history check.
Previous Ab missed = computer xm=incompatibility
special requirement missed= tx rx
What is the formula for RhoGam?
% of fetal cells x 50 / 30 = ?? (round accordingly)
add 1
Whelther a cord blood work up or a cord blood hold, how long is the sample extended for?
120 days
When is an AHG XM indicated?
previous Antibody
current antibody
Abo discrepancy
HX of positive DAT
When Phenotyping also known as antigen typing, you must run a positive and negative control for the antigen. What is the criteria for choosing a cell for your positive control?
Cell must be Heterozygous for antigen