eng Oriental Scientific Publishing Company Biomedical and Pharmacology Journal 0974-6242 2015-02-15 2 1 117 121 632 article C. Narasimha Rao 1,2 K. Balaji 1 P.Venkateswarlu 1 Department of Chemistry, Sri Venkateswara University, Tirupati - 517 502 (India). Department of Zoology, Sri Venkateswara University, Tirupati - 517 502 (India). Cyclic voltammetry and differential pulse voltammetry methods were used to determine Azathioprine (AZP) and Rocuronium (RCR) in biological fluid samples. To enhance the sensitivity of the proposed method, a clay modified carbon paste electrode (CMCPE) was used which showed increased peak currents compared to bare carbon paste electrode (CPE).The linearity was observed in the concentration ranges of 2.2×10-9 to1.2×10-5 M (AZP) and 0.2×10-9 to1.2 ×10-5 (RCR) with detection limits of 2.1×10-9 M (AZP) and 0.4×10-9 M (RCR). From the experimental results, it is found that the proposed method exhibited good repeatability and reproducibility. The present method has been successfully applied for the determination of AZP and RCR in spiked human serum samples and urine samples. https://biomedpharmajournal.org/vol2no1/determination-of-azathioprine-and-rocuronium-in-biological-fluid-samples-by-voltammetry/ Cyclic voltammetry differential pulse voltammetry Azathioprine Rocuronium