Last night my 15u (150ul at 100uper ml) pen injection using pen needles was not injected s.C.I observed a pool of liquid at the skin surface.Repeated injection with a new droplet pen needles and same liquid pooling was noted.I replaced the droplet needles a third time and again observed a liquid pool on my skin at the injection site.All pen needle injections were inserted to the full 4mm depth s.C.Before depressing plunger slowly and waiting over 15 seconds to withdraw pen needle after dosing.It appeared no lantus insulin was injected based on volume of liquid pooling on skin at injection site.Problem with droplet needles.Some (possible all) have restricted inner diameter and do not deliver does s.C.Other appear to leak at plastic pen needle tip.The full dose is not being dosed s.S.But it is not coming back out of the sub cutaneous tissue.It appears to be leaking from pen needle body.
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