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A 1.00 mL blank serum sample was spiked with 45.3x10^-9 g of lisinopril. The serum was...

A 1.00 mL blank serum sample was spiked with 45.3x10^-9 g of lisinopril. The serum was prepared and analyzed using the normal laboratory method for the analysis of lisinopril that had previously been calibrated with aqueous lisinopril standards. The analysis of the spiked sample showed a measured lisinopril concentration of 43.0 microgram/L. What is the percent recovery for lisinopril?

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