Syringes with 1/2 unit markings?

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CarolandTigger

CarolandTigger

Member Since 2015
We are using the UltiCare u-40 syringes with Vetsulin. 2 units, but vet wants to increase it to 2 1/2 u. She would prefer it if we got the syringes that measure 1/2 units instead of trying to eyeball it with what we have, but apparently her tech had a hard time finding the right syringe today. He finally did and is getting them delivered tomorrow.
Do most of you just eyeball the dosage when it involves a 1/2 unit or do you use a different type of syringe...and where do you get it? I got my last pack at Costco, but they don't carry what I'm looking for now.
 
WalMart carries U100 syringes with half unit markings, but with Vetsulin (since it's a U40 insulin) you must use This Conversion Chart

These are the syringes that have half unit markings (some pharmacists don't seem to know that their syringes DO have them)
relion syringes.png
 
The conversion chart is great! Every 0.5 unit tick mark on a U-100 syringes measures 0.2 units of U-40 insulin.
That's because U-100 has 100 units per mL and U-40 has 40 units per mL (40% or 0.4 of the concentration of U-100).
 
So from what I see on conversion charts, 2 1/2 units on a U-40 syringe would be 6.3 units on a U-100, correct? Just called my vet,..they had such a hard time finding U-40's with 1/2" increments, and they're still not in.mso I haven't been able to increase his dose yet, which is frustrating and now it's the weekend! She doesn't want me to eyeball it...and I'd rather not either, but what's so bad about using the conversion chart? I've read that vets don't like it??
 
No. Use this conversion chart.
The left column is what you want to give.
The right column is where you draw it up on a U-100 syringe.

Also, every 0.5 tick mark on a U-100 syringe measures 0.4 units of U-40 insulin.
 
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That's because you'll have to eyeball halfway between the tick marks that surround the dose you want to give.
Tell us the 2 tick marks that surround the dose you want to give, so we know you have it correct.
 
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