Table 1: Specific protein quantification in non-stimulated tears collected using PVA foam and polyester wick.
| Tear protein | PVA foam (n = 6) | Polyester wick (n = 9) | P-value |
| Lysozyme (mg/mL) | 0.26 ± 0.03 | 0.30 ± 0.01 | 0.955 |
| Lactoferrin (mg/mL) | 9.80 ± 3.13 | 11.62 ± 2.07 | 0.456 |
| IgA (mg/mL) | 0.88 ± 0.15 | 1.10 ± 0.24 | 0.776 |
| Serum albumin (mg/mL) | 0.88 ± 0.33 | 0.88 ± 0.25 | 0.955 |
*Data are presented as mean ± standard error of the mean. Wilcoxon rank sum test, p < 0.05, statistically significant.