Sign in →

Test Code XM Crossmatch

Important Note

***Crossmatch testing is performed from a current Type and Screen. Patient must have a corresponding blood bank bracelet. See Type and Screen for sample type.***

Additional Codes

EPIC LABPB01

Clinical Significance

Crossmatching is performed before a blood transfusion to determine whether the donor blood is compatible or incompatible with the recipient. The most important compatability testing is the ABO and Rh system followed by the presence of clinically significant antibodies against a sample of donor blood. This is usually the final step of pretransfusion compatibility testing. This is done to detect clinically significant antibodies, errors in ABO grouping, and clerical errors in patient identification.

Methodology

  • MTS gel cards and/or tube hemagglutination method
  • Electronic Crossmatch

Specimen Minimum Volume

0.5 mL

Blood Selection for Crossmatching

Red Blood Cells
Recipient Group Donor 1st Choice When 1st choice is not available
2nd Choice 3rd Choice 4th Choice
O Pos O Pos / O Neg Must receive group O
A Pos A Pos / A Neg O Pos / O Neg    
B Pos B Pos / B Neg O Pos / O Neg    
AB Pos AB Pos / AB Neg A Pos / A Neg B Pos / B Neg O Pos / O Neg
O Neg O Neg Must receive group O, Rh negative
A Neg A Neg          O Neg
B Neg B Neg          O Neg
AB Neg AB Neg A Neg B Neg O Neg

 

Availability

Performed STAT
24/7 Yes

 

Performing Laboratory

MultiCare Yakima Memorial Hospital Laboratory

Lab Department

Blood Bank

CPT Code

86920  Compatability test each unit; immediate spin technique (if appropriate)

86921  Compatability test each unit; incubation technique (if appropriate)

86922  Compatability test each unit; antiglobulin technique (if appropriate)

86923  Compatability test each unit; electronic (if appropriate)

LOINC

1250-0 Major crossmatch [Interp]

53799-3 Major crossmatch Electronic [Interp]

Related Tests