Hey -
Here's most of what I sent to someone earlier about needles. You may be in the same boat as me - and apparently, not a bad place to be at all!!!
Lu-Ann
I had been using larger needles that the vet provided: Ulticare Vet Rx brand, U40, 1cc 29 gauge x 1/2". Interestingly, the box is labeled 'High Dose" (just noticed this!)
Because i'm doing "mini doses" of less that 1/2 unit, I've converted to the u100 needles - THESE ALSO REQUIRE USING THE CONVERSION CHART FOR QUANTITY OF DOSING referenced above. The first pack had lines for 1 unit, and were labeled 5, 10,.... After reading a thread on this board regarding needles w/ 1/2-unit markings, I went to WalMart and purchased ($2) one package of their ReliOn brand. They too have lines for 1 unit, are labeled 5, 10, ... but they have 1/2 unit markings as well. This is extremely helpful for older eyes. So the markings on these u100 bags are as follows:
BD 3/10 cc capacity, 30 G and 1/2" needle.
ReliOn 3/10 cc, 31 G and 5/16" needle.
Jury is still out on the needle length and gauge, but the U100 needles are VERY helpful for me. One thing you need to do, should you decide to try the other - KEEP THEM SEPARATE. The U40s are supposed to have red caps; the U100s are orange. I think this is standard, but make sure. It's also labeled on each needle what type insulin they are for.