U100 and cc

CDBob2000 · #1 (**permalink**) 05-07-2008, 06:51 AM

Hi All!

I am a little confused on converting in metric,,,

I kind on got the idea but the numbers don't work out..

the bottle says 10 ml which is 10cc and if you take 10 x U100 it equals 1000 units... in a 10 cc bottle.. as far as I can tell is if I take 10 units per day the bottle should last 100 days..

now the kickers is I took a old needle and shot 100 units into a old cough med drink cup.. and it didn't look like enough,,

or is it... so my question is if I pull 100 units from the u100 bottle is that 1 cc of liquid,,,

the needle is 3/10 cc and is marked in units
I will assume that means 30 units so if I pull 100 units is that a full cc of liquid,,

Thanks..

Keezheekoni · #2 (**permalink**) 05-07-2008, 08:55 AM

What you are pulling into your syringe is correct. 100U of insulin is 1cc/1mL.

Don't *ever* count on an OTC cough syrup cup to be correct. OTC medication manufacturers get close to accurate with their cups, but they never are correct completely.

Insulin should only be used for 30 days, yes you may get 100 days' use out of it, but it won't be as effective after 30 days.

Harold · #3 (**permalink**) 05-07-2008, 10:31 AM

Your multiplying apples and oranges. In other words quantity (10ml) times strength (U100).

CDBob2000 · #4 (**permalink**) 05-09-2008, 08:38 PM

LOL apples and oranges,,,,

Just like electronic calculations there are many apples and to many oranges in the formulas...

I am confused you say 30 days but bottle says good till 11 2009 ...

And

I got a hold of an old bottle and took the top off and did the measurements and it is 1cc of liquid for 100 unit,,

morrisma · #5 (**permalink**) 05-10-2008, 03:22 AM

Insulin is good longer than 30 days unless subjected to extreme temps. It may start to lose some potency but that is a long slow process, not an instant, good one day, bad the next, kind of thing.

gossie · #6 (**permalink**) 05-10-2008, 06:45 AM

Quote:

Originally Posted by Keezheekoni

What you are pulling into your syringe is correct. 100U of insulin is 1cc/1mL.

Don't *ever* count on an OTC cough syrup cup to be correct. OTC medication manufacturers get close to accurate with their cups, but they never are correct completely.

Insulin should only be used for 30 days, yes you may get 100 days' use out of it, but it won't be as effective after 30 days.

So, if I'm taking 20 Humalog ... First off, it's 20Units which is equal to 2cc? I think I"m more confused than any of you LOL

vegasvic · #7 (**permalink**) 05-10-2008, 09:34 AM

Whoa, you lost me there too!

A 10ml bottle of insulin U-100 contains 1000 units of insulin. (U-100 = 100units/ml X10ml = 1,000units insulin). Theoretically, if you’re using 10 units (0.1ml) daily it should last you 100 days (1,000 units/10units/day =100 days).

All things being equal if you have a U-100 scale on your syringe and you pull up 100 units regardless of the needle size/length you should have 1ml insulin. Three-tenths (3/10) is the size of the syringe and not the needle so if you pull up to the 30 unit mark you have 0.3ml not 1ml.

The insulin manufacturer suggests that once opened the vial of insulin is only to be used for 28 days at room temp or refrigerated temps or until the expiration date which ever is reached first. All the entering of the vial over a 28 days period makes introducing something that might grow in the insulin more likely so they suggest you toss it after 28 days. After being entered so many times the membrane loses its integrity and that my make it less than sterile also. Its up to you of course. Without looking at studies, you have to realize that after a period of time at RT the activity of the insulin will decrease and this could be another reason why the manufacturer states 28 days, they are covering their and your butts.

If cost is your concern and you are going to use it after 28 days anyway then be sure to check for a darkening of the liquid or clumping of the suspension or cloudiness (all depending which type you are using of course). And store it in the refrigerator when not in use, that should slow down any growth may want to occur.

vic

CDBob2000 · #8 (**permalink**) 05-10-2008, 10:16 AM

Ok maybe that is why the nurse that showed me how too..
said to put it in the fridge,, NOT the freezer..

She just left off the other part about 28 Days..

CDBob2000 · #9 (**permalink**) 05-10-2008, 10:21 AM

Gossie thing of mixing bleach and water..
when you mix well and dip a cup out of the solution how much bleach is in the cup