Application of Techniques, Interpretation and Differential Diagnosis —
Training activity: 9

Details

Perform and interpret the appropriate techniques for the investigation of an inherited disorder of haemoglobin

Type

Developmental training activity (DTA)

Evidence requirements

Evidence the activity has been undertaken by the trainee​.

Reflection on the activity at one or more time points after the event including learning from the activity and/or areas of the trainees practice for development.

An action plan to implement learning and/or to address skills or knowledge gaps identified.

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 are the common inherited disorders of haemoglobin (e.g., sickle cell disease, thalassaemia), and what are the primary laboratory techniques used for their investigation (e.g., haemoglobin electrophoresis, HPLC, molecular analysis)?
• How will you interpret the different patterns of haemoglobin variants detected by these methods?
• What is the role of family studies and genetic counselling in the investigation of inherited haemoglobin disorders?
• Consider the specific insights you hope to gain, such as understanding the correlation between genotype and phenotype in inherited haemoglobin disorders.
• Reflect on your current knowledge of haemoglobin disorders and their laboratory diagnosis, and how this training activity will develop your skills in this area.
• Discuss with your training officer the specific techniques you will be focusing on, which might include electrophoresis, HPLC, or molecular methods, and the types of inherited haemoglobin disorders you will be investigating.
• Review the principles and interpretation of these techniques in the context of haemoglobinopathies and thalassaemias.
• Think about potential challenges, such as interpreting complex electrophoretic or HPLC patterns or understanding molecular reports, and consider how you might address them (e.g., reviewing reference materials, discussing with molecular scientists).
• Consider your current comfort level with investigating inherited haemoglobin disorders and identify areas for focused preparation.

In action

• As you perform techniques to investigate inherited haemoglobin disorders (e.g., haemoglobinopathy screen, DNA analysis), what specific methodological considerations are important for these tests?
• What observations are you making during the testing (e.g., chromatography patterns, PCR results)?
• How confident are you in the accuracy and reliability of your technical work? What challenges are you facing with these complex investigations?
• Are there other relevant tests you might consider based on initial results or clinical information?
• Do you need to consult with molecular diagnostics specialists?
• Are you following the correct procedures for these genetic and protein-based assays?
• During interpretation of the results, what abnormal haemoglobin variants or genetic mutations are you identifying?
• What specific inherited haemoglobin disorder(s) are you suspecting?
• What aspects of the interpretation are straightforward (e.g., presence of a known abnormal band), and what requires detailed knowledge of genotype-phenotype correlations?
• How certain are you about your interpretation of the genetic or protein data? What unexpected findings have you observed?
• What are you learning about the relationship between laboratory findings and the clinical manifestations of inherited haemoglobin disorders? How do these results align with your understanding of the molecular basis of these conditions?
• Are there alternative genetic or protein interpretations? Should you discuss these complex findings with a clinical geneticist?
• Are you interpreting the results according to established diagnostic guidelines and reporting standards?

On action

• Describe the specific techniques you employed and interpreted for investigating an inherited disorder of haemoglobin.
  • What were the key steps in each technique?
  • What were the normal controls or expected patterns for these techniques?
  • What were the significant observations in the samples you analysed?
  • Were there any technical difficulties or unexpected findings during the investigation?
  • How did you integrate the results from different techniques (e.g., electrophoresis, HPLC) to interpret potential inherited haemoglobin disorders?
• What new skills or knowledge did you acquire or improve regarding the investigation of inherited disorders of haemoglobin?
  • Did you observe any unusual patterns or results?
  • What did you learn from analysing these?
  • How did this activity enhance your understanding of the laboratory diagnosis of inherited haemoglobinopathies?
• What specific aspects of investigating inherited disorders of haemoglobin have you identified as needing further development?
  • How will you apply the knowledge and skills gained from this activity to future investigations of similar conditions?
  • What specific actions will you undertake to enhance your skills and knowledge in this area?
  • What resources or support do you think would be beneficial for your ongoing development in investigating inherited haemoglobin disorders?

Beyond action

• Think back to your experience of performing and interpreting techniques for investigating inherited haemoglobin disorders (e.g., haemoglobin electrophoresis, HPLC for haemoglobin variants, molecular testing). Has your understanding of the different types of haemoglobinopathies and thalassaemias, and the interpretation of the various diagnostic tests, deepened over time?
• Compare your reflections on this training activity with those from training activities focusing on other red cell disorders like acquired anaemias or enzyme/membrane disorders. What are the key differences in the diagnostic approaches for inherited versus acquired conditions?
• Review your initial reflections on this training activity. Have any complexities in the interpretation of haemoglobinopathy screening or diagnostic results become more apparent with further learning or exposure to different case scenarios?
• Understand how investigating inherited haemoglobin disorders contributes to your expertise in diagnosing a range of haematological conditions. How has your learning from this training activity influenced your ability to interpret routine blood counts or morphology in individuals who may have an underlying haemoglobinopathy?
• Can you identify situations in your current practice where your knowledge from this training activity has helped you understand the need for specific confirmatory tests or referral for specialist advice in suspected cases?
• What transferable skills, such as the ability to integrate clinical history with complex laboratory findings or understanding the principles of genetic testing in diagnosis, did you develop through this training activity? How will these skills be valuable in your future career?
• Based on your reflection, what specific areas within the investigation of inherited haemoglobin disorders (e.g., interpretation of complex molecular reports, understanding genotype-phenotype correlations) do you aim to develop further?

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.