Table 2.

Recovery of morphine from three different sample matrices over 3 days

Spiked level	Sample A	Sample B	Sample C
Low	72.32 ± 4.85%	88.57 ± 3.26%	101.25 ± 0.87%
Medium	94.64 ± 1.68%	95.86 ± 1.43%	99.66 ± 0.92%
High	101.65 ± 2.79%	102.50 ± 1.17%	104.83 ± 0.64%
Mean	89.54 ± 13.58%	95.65 ± 6.32%	101.91 ± 2.40%