Table 3.
Fresh specimen results and paired analysis
| Variable | MSU n = 32 |
CSU n = 32 |
Z | P | ||
|---|---|---|---|---|---|---|
| Volume in millilitres | 75 | (41.25–100) | 30 | (25–40) | −4.45 | <0.001* |
| Specific gravity | 1.010 | (1.005–1.015) | 1.010 | (1.010–1.015) | 0.00 | 1.00 |
| Protein | ||||||
| Negative | 17 | (53.1) | 18 | (56.3) | ||
| Trace | 10 | (31.3) | 9 | (28.1) | 0.00 | 1.00 |
| + | 4 | (12.5) | 3 | (9.4) | ||
| ++ | 1 | (3.1) | 2 | (6.3) | ||
| Leukocyte esterase | ||||||
| Negative | 4 | (12.5) | 19 | (59.4) | −4.61 | <0.001* |
| Trace | 6 | (18.8) | 11 | (34.4) | ||
| + | 12 | (37.5) | 2 | (6.3) | ||
| ++ | 2 | (6.3) | 0 | – | ||
| +++ | 8 | (25.0) | 0 | – | ||
| ATP concentrationa | 2504 | (1415–5779) | 12,323 | (8250–2098) | −4.56 | <0.001* |
| RBC countb | 4 | (0.5–12.0) | 7 | (2.0–36.0) | −2.79 | 0.004* |
| WBC countb | 67 | (40.5–135.5) | 46 | (32.0–70.5) | −2.75 | 0.005* |
| EPC countb | 41 | (17.5–69.5) | 22 | (10.5–36.5) | −2.57 | 0.009* |
Data reported as n (%) or median (IQR) and paired analysis performed by Wilcoxon signed ranks test. MSU samples had significantly higher leukocyte esterase, ATP concentration, and cell counts
aConcentration described in attamoles, or mole × 10−18
bRed blood cell (RBC), white blood cell (WCC), epithelial cell (EPC) per high power field