2 Pre-Transfusion Procedures

Prepare safely before transfusion

Safe preparation begins before the blood arrives at the bedside. Confirm that the intended patient is identified, informed, and assessed; that a correctly collected specimen reaches the transfusion service; and that compatibility testing and special product requirements have been addressed. Follow facility policy and applicable regulations because workflows and consent documentation can vary.

Identify the patient and collect the specimen

Use at least two approved Patient identifiers when collecting a blood specimen or providing care. When possible, ask the patient to state identifying information, then compare it with the identification band and laboratory request. A room or bed number is not an identifier. If the information does not match, or the patient cannot be reliably identified, stop and follow the facility’s identification process before proceeding.

Collect for one patient at a time. Do not pre-label tubes. Use Bedside specimen labeling: label the specimen at the patient’s side immediately after collection, following local requirements for identifiers, collection date and time, and collector identification. Before sending the sample, compare the completed label with the patient band and request. Incorrectly identified specimens can lead to incompatible blood being selected.

For example, if two patients have similar names, use the required identifiers on each patient’s band and request; do not rely on the room number or name alone. If a patient’s stated date of birth differs from the wristband, stop specimen collection or transfusion preparation and resolve the discrepancy using facility procedure. A matching name or room number does not make a partial identification match sufficient.

Confirm informed consent

Before transfusion, confirm that the patient has received understandable information about why transfusion is proposed, its expected benefits and material risks, relevant alternatives, and the implications of declining. Give the patient an opportunity to ask questions, and confirm that consent has been obtained and documented as required by facility policy.

If the patient is unsure, declines, or raises questions beyond your scope, pause and contact the responsible clinician. For example, if a patient says they do not understand why transfusion is needed, the clinician should discuss the indication, benefits, risks, and alternatives in a way the patient understands. A signed form or prior discussion does not replace addressing the patient’s concern.

Confirm compatibility and product requirements

The transfusion service performs Pre-transfusion testing, which commonly includes ABO/Rh typing and an antibody screen, with crossmatching when indicated. The testing method and specimen-validity period depend on clinical history and laboratory policy. Previous transfusions, pregnancies, and known red-cell antibodies may affect unit selection or testing, so communicate relevant history and special requirements to the transfusion service.

Before proceeding, confirm that the prescribed component and any special requirements have been addressed and that the transfusion service has released a compatible product for the intended patient. Bedside identification and product checks remain essential. Do not substitute your own interpretation for the laboratory’s compatibility determination.

If a patient reports a previous transfusion reaction and a known red-cell antibody, communicate this history to the responsible clinician and transfusion service. Confirm that required testing and special product requirements have been addressed; do not assume that a routine compatibility pathway applies.

Complete the pre-transfusion assessment

Check the transfusion order and documented indication. Review relevant history, including previous transfusions or reactions, known antibodies, and special component requirements. Assess the patient’s current condition and symptoms, and document Baseline observations according to local protocol. These commonly include temperature, pulse, blood pressure, and respiratory rate.

Check that suitable venous access is available. Consider conditions that may affect the patient’s tolerance of transfusion, such as cardiac or renal impairment. Report concerning findings to the responsible clinician before proceeding. If observations or symptoms are concerning, resolve the concern with the clinician before transfusion.

Apply the stop-and-clarify principle

Before proceeding, stop and clarify any identity discrepancy, missing information, unresolved patient concern, or concerning assessment finding. Safe preparation brings together reliable identification, a correctly collected and labeled specimen, informed and documented consent, confirmed laboratory compatibility, and a relevant baseline assessment.