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Table 3 Efficacy of lidocaine delivery to tissues through one microconduit.

From: Transdermal microconduits by microscission for drug delivery and sample acquisition

Site with one microconduit 'Pinprick Test' sensation Anesthetized radius (μm)
Soaked with lidocaine for 1 minute Slight sensation 250
Soaked with lidocaine for 2 minutes No sensation 850
Soaked with lidocaine for 3 minutes No sensation 1,900
Soaked with lidocaine for 4 minutes No sensation 2,200