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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