Table 2.

Sputum periostin levels increased with increasing dilution of sputum supernatant

	Dilution
ID	1:2	1:10	1:50
24312	0.35	0.49	0.95
24327	ND	0.17	ND
24488	0.27	0.49	1.78
24586	0.47	0.36	1.21

Periostin results are shown as ng of periostin per mL of sputum supernatant

ND not detected