Substance P (SP) recovery after addition of synthetic peptide to three lavage samples
| Sample | Initial SP concentration in BAL fluid (pg/ml) |
Concentration in BAL fluid after addition of SP (pg/ml) |
Measured SP concentration (pg/ml) | % recovery |
|---|---|---|---|---|
| 1 | 0 | 400 | 388 | 97 |
| 2 | 0 | 400 | 381 | 95 |
| 3 | 0 | 400 | 343 | 86 |









