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Fig. 3 | Drug Delivery and Translational Research

Fig. 3

From: Models and methods to characterise levonorgestrel release from intradermally administered contraceptives

Fig. 3The alternative text for this image may have been generated using AI.

The extraction recovery efficiencies of different organic solvents from two simple media (water and IVR medium) using a ‘high’ (1.6 µg/mL) or ‘low’ (0.4 µg/mL) spiked LNG concentration. Extraction recovery efficiencies were calculated in comparison to an untreated extraction control (EC1) which was not subject to any of the extraction steps. Data shown are the means ± SD. For water samples; n = 6. For IVR samples at high concentration; n = 3 except for tert-butyl methyl-ether and isoamyl alcohol where n = 2, while at low concentration; n = 2 each except for isoamyl alcohol where n = 0

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