Table 1.
Analysis of 192 samples with suspected HbA2' with varying S-window peaks.
| S-Window Peaks |
Total Cases n (%) |
Retention Time Range (min) Mean ± SD |
HbA2* Range (%) Mean ± SD |
Cases with HbA2 > 3.5% n (%) |
Cases with HbA2+suspected HbA2'>3.5% n (%) |
Additionally suspected β-thalassaemia minor n (%) |
|---|---|---|---|---|---|---|
|
<1% |
123 (64.2) |
4.33-4.62 4.59 ± 0.04 |
1.0-7.0 3.22 ± 1.41 |
27 (22.6) |
47 (39.5) |
20 (16.9) |
|
1-2% |
63 (32.6) |
4.32-4.62 4.59 ± 0.05 |
1.3-6.3 3.07 ± 1.08 |
10 (15.9) |
51 (81) |
41 (65.0) |
|
>2% |
6 (3.1) |
4.44-4.61 4.56 ± 0.06 |
2.3-5.2 3.67 ± 1.05 |
3 (50) |
6 (100) |
3 (50) |
|
All cases |
192(100) |
4.32-4.62 4.58 ± 0.05 |
1.0-7.0 3.19 ± 1.30 |
40 |
104 |
64 |
* Difference in HbA2 levels in three groups was statistically not significant
The table shows retention time of small S-window peaks along with their HbA2 percentages and the frequency of additional cases suspected of β-thalassaemia minor among 192 total cases.