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Bloodworks Northwest Laboratories

Order Sample Requirements
>5 Years Old 1-5 Years Old* <1 Year Old
Autologous WB/RBC 1 full 7 mL EDTA
Emergency Crossmatch WB/RBC

Routine Crossmatch WB/RBC

1 full 7 mL EDTA 1 full 3 mL EDTA tube 2 full 0.5 mL EDTA Microtainers
Crossmatch-Pediatric RBC 1 full 7 mL EDTA 1 full 3 mL EDTA tube 2 full 0.5 mL EDTA Microtainers
Outpatient Transfusion 2 full 7 mL EDTA** 1 full 3 mL EDTA tube 2 full 0.5 mL EDTA Microtainers
Suspected Hemolytic Transfusion Reaction 1 full 7 mL EDTA 1 full 3 mL EDTA tube 2 full 0.5 mL EDTA Microtainers
Hold Sample 1 full 7 mL EDTA 1 full 3 mL EDTA tube 2 full 0.5 mL EDTA Microtainers
Infant Protocol 2 full 0.5 mL EDTA microtainers to enroll on Infant Protocol. Additional samples not required after enrolled on Infant Protocol during this hospitalization
Preadmission Crossmatch

Preadmission Type and Screen

2 full 7 mL EDTA** 1 full 3 mL EDTA tube
Type and Screen 1 full 7 mL EDTA 1 full 3 mL EDTA tube 2 full 0.5 mL EDTA Microtainers

* When a child’s blood volume is adequate to tolerate collection of a 7 mL sample, it is best to collect the full 7 mL sample to avoid re-draws if an antibody is identified or more blood is needed.

** When orders are placed for an Outpatient Transfusion or Preadmission Order, for patients > 5 years old it is preferable to send two full 7 mL samples to avoid re-draw if the patient has antibody that must be identified.

Transporting Samples

All samples must be sent to the Blood Center in a sealed, leak-proof container marked with a biohazard sticker to comply with OSHA safety standards.

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