| Dissacharidase assay positive (Normolactasia) | Dissacharidase assay negative (Hypolactasia) | |
|---|---|---|
| Using scope XQ, n=26, Mean weight of biopsies=0.0003 gm | ||
| Biohit +ve (normolactasia) | 4 | 3 |
| Biohit −ve (hypolactasia) | 0 | 19 |
| Sensitivity 4/4=100% | Specificity 19/22=86% | |
| Positive predictive value 4/7=57.1% | Negative predictive value 19/19=100% | |
| Using scope XP, n=12,Mean weight of biopsies =0.002 gm | ||
| Biohit +ve (normolactasia) | 2 | 2 |
| Biohit-ve (hypolactasia) | 0 | 8 |
| Sensitivity 2/2=100% | Specificity 8/10=80% | |
| Positive predictive value 2/4=50% | Negative predictive value 8/8=100% | |