Table 2.

Summary of mean absorbances (n = 6) and P-values (unpaired 2-tailed t-test, 95 % CI) for the control, a sample sonicated for 15 min and a sample spiked with Hz

Sample	Average absorbance	P-value
Control	0.024 ± 0.003	N/A
Sonicated for 15 min	0.021 ± 0.001	0.08
Hz Spiked	0.027 ± 0.006	0.26