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

Table 3

TNF-α concentrations of the standards.

Concentrations (ng/L)	Measured OD	Absolute OD
0	0.056	0
30	0.337	0.281
60	0.571	0.515
120	0.971	0.915
240	1.594	1.538
480	2.586	2.530