Application of Techniques, Interpretation and Differential Diagnosis —
Training activity: 11

Details

Perform and interpret serology for all of the following:

• DAT
• IAT
• Serological cross matching
• Electronic issue
• ABO blood grouping
• Rh phenotyping

Type

Entrustable training activity (ETA)

Evidence requirements

Evidence the activity has been undertaken by the trainee repeatedly, consistently, and effectively over time, in a range of situations. This may include occasions where the trainee has not successfully achieved the outcome of the activity themselves. For example, because it was not appropriate to undertake the task in the circumstances or the trainees recognised their own limitations and sought help or advice to ensure the activity reached an appropriate conclusion. ​

Reflection at multiple timepoints on the trainee learning journey for this activity.

Considerations

• Local SOPs
• Guidelines and standards, including EQA and IQC
• Maintenance and basic troubleshooting
• Reference intervals
• Limitations of the methods

Reflective practice guidance

The guidance below is provided to support reflection at different time points, providing you with questions to aid you to reflect for this training activity. They are provided for guidance and should not be considered as a mandatory checklist. Trainees should not be expected to provide answers to each of the guidance questions listed.

Before action

What does success look like?

• Identify what is expected of you in relation to performing and interpreting all the listed serological methods for transfusion science.
• Consider how the learning outcomes apply, specifically in relation to selecting, performing, and interpreting techniques, describing limitations, applying quality control principles, and communicating results.
• Discuss with your training officer to gain clarity of what is expected for all the serological methods listed.

What is your prior experience of this activity?

• Think about what you already know about performing red cell serology tests, including tube techniques, column agglutination technology, sample requirements, and quality control. Consider your prior experience interpreting results for DAT, IAT, cross matching, electronic issue, ABO grouping, and Rh phenotyping.
• Consider possible challenges you might face during the activity, such as weak reactions, unexpected antibodies, discrepancies, or sample issues, and think about how you might handle them.
• Recognise the scope of your own practice for this activity, meaning knowing when you will need to seek advice or help e.g., for complex antibody identification, resolving discrepancies and from whom.
• Acknowledge how you feel about embarking on this training activity, given the critical nature of transfusion serology for patient safety.

What do you anticipate you will learn from the experience?

• Consider the specific skills you want to develop, drawing upon previous experiences, which might include setting up and interpreting antibody screens and panels, performing serological cross matches, or understanding electronic issue protocols.
• Identify specific insights you hope to gain from engaging with the activity, for example, understanding the clinical context of these tests e.g., transfusion reactions, haemolytic disease of the foetus and newborn or applying BSH guidelines.

What additional considerations do you need to make?

• Consult actions identified following previous experience of performing and interpreting serology.
• Identify important information you need to consider before embarking on the activity, such as:
  • Reviewing the principles of red cell serology techniques e.g., tube techniques, column agglutination technology and their applications.
  • Familiarising yourself with the requirements for Electronic Issue and Serological cross matching to maintain patient safety in transfusion.
  • Reviewing BSH guidelines relevant to red cell investigations.
  • Understanding the clinical contexts of these tests, such as their role in investigating transfusion reactions or haemolytic disease of the foetus and newborn.

In action

Is anything unexpected occurring?

• Are you noticing anything surprising or different from what you anticipate whilst performing these serological tests and interpreting reactions?
• Are you encountering situations such as:
  • Weak or unexpected reactions appearing in ABO blood grouping or Rh phenotyping that are not immediately explained by historical patient data, causing a discrepancy that prevents immediate Electronic Issue?
  • An unexpected antibody reaction being detected in the IAT or cross matching that requires immediate initiation of a full antibody identification panel?
  • The patient being tested for Haemolytic Disease of the Foetus and Newborn (HDFN) and encountering a highly complex or high-titre antibody that makes unit selection challenging?
• How did this specific sample or case compare with previous experiences performing transfusion serology?

How are you reacting to the unexpected development?

• How is this impacting your actions? For example, are you responding to the situation appropriately? Are you adapting or changing your approach to the analysis and interpretation?
• Consider the steps you are taking in the moment, such as:
  • Immediately checking sample details e.g., patient identity, history and performing quality control to rule out technical error as the cause of the unexpected reaction?
  • Setting up additional investigations e.g., an antibody panel or adsorption studies to resolve the unexpected finding or discrepancy?
  • Seeking immediate advice from a senior Biomedical Scientist or Haematologist regarding the interpretation of a complex antibody or a discrepancy that affects the safety of serological cross matching?
• How are you feeling in that moment? For instance, are you finding it difficult to adapt your knowledge of antibody identification under the time pressure of a critical transfusion? Is it affecting your confidence given the critical nature of transfusion safety?

What is the conclusion or outcome?

• Identify how you are working within your scope of practice. For example, are you successfully resolving an ABO discrepancy through meticulous testing and interpretation? Or are you needing support because the unexpected antibody finding requires specialist expertise for classification or complex unit selection?
• What are you learning as a result of the unexpected development? For example, are you learning a specific technique for resolving serological discrepancies efficiently, or gaining crucial insight into the importance of correlating serological results with historical patient data and clinical context?

On action

What happened?

• Begin by summarising the key points of the experience of performing and interpreting this panel of serological tests, including electronic issue procedures. What were the main steps from sample receipt through to compatibility checking and issuing blood?
• Consider specific events, actions, or reactions which felt important, such as encountering unexpected antibodies in the IAT or resolving an ABO grouping discrepancy. Include your own feelings during the experience.
• Include any ‘reflect-in-action’ moments where you had to adapt to the situation as it unfolded, for instance, immediately initiating an antibody panel based on an unexpected reaction or seeking urgent input due to a crossmatch incompatibility.

How has this experience contributed to your developing practice?

• Identify what learning you can take from the experience regarding transfusion serology techniques, interpretation, or discrepancy resolution, e.g., improving your methodical approach to antibody identification. What strengths did you demonstrate e.g., proficiency in reaction grading or adherence to electronic issue protocols? What skills and/or knowledge gaps were evident e.g., unfamiliarity with specific complex antibody characteristics or resolving rare discrepancies?
• Compare this experience against previous transfusion serology activities – were any previous identified actions for development achieved? Has your practice improved?
• Identify any challenges you experienced e.g., dealing with weak reactions, complex antibodies, or discrepancies and how you reacted to these. Did dealing with complex antibodies or discrepancies affect your ability to deal with the situation? Were you able to overcome the challenges?
• Identify anything significant about the activity. Did you need to seek advice or clarification regarding test results, interpretation of complex cases, or unit selection? Did you need to escalate to ensure that you were working within your scope of practice, especially concerning issuing blood?
• Acknowledge any changes in your own feelings now you are looking back on the experience.

What will you take from the experience moving forward?

• Identify the actions / ‘next steps’ you will now take to support the assimilation of what you have learnt, including from any feedback you have received e.g., practising antibody panel interpretation or reviewing HDFN protocols.
• What will you do differently next time you perform or interpret transfusion serology? Has anything changed in terms of what you would do if you were faced with a similar situation again e.g., a crossmatch incompatibility?
• Do you need to practise any aspect of the activity further e.g., antibody panel interpretation, discrepancy resolution, specific serological techniques?

Beyond action

Have you revisited the experiences?

• Have you reviewed your previous reflections for this activity? Has your understanding of the principles and interpretation of DAT, IAT, crossmatching, electronic issue, ABO grouping, and Rh phenotyping evolved in light of subsequent clinical cases?
• Have you had further opportunities to perform and interpret red cell serology testing since completing this activity? Have you encountered different antibody specificities or complex serological challenges e.g., resolving an ABO discrepancy?
• Can you recall specific instances in routine work where accurate red cell serology was critical for patient safety e.g., complex transfusions, antenatal cases, or investigating suspected transfusion reactions? How did your experience in this TA inform your approach?
• Have you discussed red cell serology results or challenging cases with peers, colleagues, or clinical teams? Did engaging in multidisciplinary discussions enhance your understanding of the clinical context of antenatal cases?

How have these experiences impacted upon current practice?

• Has this activity improved your technical skills in red cell serology and your confidence in interpreting results according to standard operating procedures and guidelines?
• Do you now have a better understanding of the principles of antigen-antibody reactions in transfusion medicine and the importance of accurate testing for patient safety?
• Has this experience influenced your attention to detail in sample handling, testing procedures, and documentation for transfusion activities e.g., ensuring meticulous records for Electronic Issue?
• How will your comprehensive experience in core red cell serology prepare you for managing more complex transfusion issues e.g., complex antibody identification or working with advanced serological techniques in the future, contributing to ensuring the safety and effectiveness of blood transfusion?

Relevant learning outcomes

#	Outcome
# 1	Outcome Select techniques for the investigation of clinical presentations in haematology, haemostasis and transfusion science and medicine.
# 2	Outcome Perform the laboratory techniques required for the investigation of clinical presentations in haematology, haemostasis and transfusion science and medicine.
# 3	Outcome Interpret the results of the laboratory investigations for cases including red and white cell disorders and haemostatic and platelet disorders, haematological malignancy and transfusion serology.
# 4	Outcome Describe the limitations of techniques applied in the investigation of clinical presentations in haematology, haemostasis and transfusion science.
# 5	Outcome Apply the principles of internal quality control and external quality assessment and draw conclusions about assay performance.
# 6	Outcome Demonstrate appropriate communication skills to present the results of investigations and cases clearly to healthcare professional colleagues.