Table 1

Numbers of mast cells detected by toluidine blue compared with mast cell tryptase immunostaining

Mast cells/mm2 of cortex median (range)
DiagnosisToluidine blue (pH 1.0)Mast cell tryptasep Value
p Values were calculated using the Mann-Whitney U test.
CPN, chronic obstructive pyelonephritis; CVR, chronic vascular rejection.
Normal kidney0.2 (0–0.8)1.4 (0.3–3.6)0.03
CVR12.5 (6.9–14.3)41.3 (25.3–52.3)<0.01
CPN7 (1.6–12)37.8 (23.5–47.1)<0.01