77. Which of the following Hb types coelute with HbA2 in HPLC ?
[1] HbE
[2] HbD Iran
[3] Hb Lepore
[4] All of these
Answer = [4] All of these
Hb E, Hb D Iran and Hb Lepore all coelute with HbA2.
The table below shows conditions in which HBA2 window will show increased area or increased concentration.
NOTE if HbA2 is =/> 10% then diagnosis other than Beta Thal trait should be considered
