| I keep my lantus and humalog refriderated and use it until it's gone. Lantus lasts me about 6 weeks, humalog sometimes as much as 3 months...I've had a few bottles go bad here and there, but always in the summer and always when I forgot and left one out for a day or so.
Now if I start seeing abnormally high readings for a day or so for no apparent reason, I'll disgard the bottles and start fresh if they are older than 28 days.
I've never reused a syringe, and I haven't used alchohol pads in MONTHS.
Before someone asks, I don't use pens because I don't have insurance and they cost 2x as much as bottles and syringes do.
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~Holly~
Incorrectly dx'ed type 2 7/00 
Correctly dx'ed type 1 5/01
MDI
Lantus 2x daily & Humalog
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