Effect of Perioperative Dexmedetomidine Anesthesia on Prognosis of Elderly Patients with Gastrointestinal Tumor Surgery

Table 2

DAO concentrations of the standards.

Concentrations (μmol/mL)	Measured OD	Absolute OD
0	0.105	0
15	0.284	0.178
30	0.484	0.378
60	0.850	0.744
120	1.359	1.254
240	1.929	1.823