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Transfusion associated peak in hb HPLC chromatogram - a case report
Sonal Jain1, Jasmita Dass, Hara Prasad Pati
1Department of Hematology, All India Institute of Medical Sciences, New Delhi.
Mediterranean Journal of Hematology and Infectious Diseases
|February 21, 2012
Summary
High-performance liquid chromatography (HPLC) for hemoglobin analysis can yield confusing results if transfusion history is unknown. This case highlights how a suspected transfusion artifact in juvenile myelomonocytic leukemia (JMML) was confirmed by parental HPLC.
Area of Science:
- Hematology
- Clinical Chemistry
- Genetics
Background:
- Hemoglobinopathies are commonly diagnosed using High-Performance Liquid Chromatography (HPLC) and electrophoresis.
- Accurate interpretation of hemoglobin analysis relies on complete patient transfusion history.
- Juvenile myelomonocytic leukemia (JMML) is a rare pediatric malignancy affecting myeloid and monocytic cell lineages.
Observation:
- A case of JMML presented with an unusual HPLC chromatogram.
- Elevated fetal hemoglobin (HbF) and a peak in the HbD window were observed.
- The percentage of HbD appeared unexpectedly low, suggesting a potential artifact.
Findings:
- A transfusion-acquired peak was suspected as the cause of the aberrant HPLC result.
- Parental HPLC analysis was performed to investigate the suspected artifact.
- The suspected transfusion artifact was confirmed through comparative parental and patient HPLC.
Implications:
- This case underscores the critical importance of considering transfusion history in interpreting HPLC results for hemoglobin disorders.
- Misinterpretation of HPLC data due to transfusion artifacts can lead to diagnostic errors.
- Integrating clinical information, such as transfusion history, with laboratory findings is essential for accurate diagnosis in complex cases like JMML.
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