Table 2.

Validity parameters in analytical determination of tetracyclines residues in milk samples.

Parameter	Oxytetracycline	Tetracycline	Chlortetracycline
LOD µg/L	1.52	1.29	1.95
LOQ µg/L	4	4	5
Regression coefficient	0.995	0.998	0.994
Retention time (min)	4.23	4.91	7.49