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. 2026 Jul 5;16:20571. doi: 10.1038/s41598-026-60367-3

Table 2.

Regression parameters for determination of Cefazolin (CFZ), Marbofloxacin (MFC), and Sulfadimidine (SDD) by the proposed HPTLC-densitometric method.

Parameters CFZ MFC SDD
Range (µg/band) 0.001–0.09 0.001–0.09 0.001–0.09
MRL (µg/band) 0.005 0.015 0.01
Regression Parameters 54,500 ± 404.5606 38,669 ± 283.99 27,899 ± 210.569
Slope ± SD
Intercept ± SD 421.63 ± 5.316 535.55 ± 3.737 355.06 ± 12.187
SD of residuals (Sy/x) 31.304 21.975 16.293
Correlation coefficient (r) 0.9998 0.9998 0.9998
LOD (µg/band) 0.3 × 10− 3 0.3 × 10− 3 0.29 × 10− 3
LOQ (µg/band) 1 × 10− 3 1 × 10− 3 0.9 × 10− 3