# Re: [IP] need math help with V/H mix

```>
> I think I accidentally did an incorrect cartridge mix with
> Velosulin/Humalog. this might explain geneva's three days of being
> on the low side.
>
> could someone tell me what ratio I used?
>
>     "      40 units Velosulin
>
>
> is this close to 3:1 ratio    (H/V)

You must differentiate between ratio and proportion

Ratio would be the fraction of a single part to the whole

i.e. for the V it would be 40/140

as opposed to the proportions which are
100 parts H & 40 parts V
same as
10 parts H & 4 parts V
sames as
5 parts H and 2 parts V
same as
2.5 Parts H and 1 part V

Generally on the list we speak of the proportions of the various
insulin components in the mix. The charts on the about page are based
on the above.

The result of using the above mix when you think you are using
something with more H and less V would probably be a higher than
expected post-prandial bg followed by a lower than expected bg
several hours later. See the graph at:
http://www.insulin-pumpers.org/images/hr_graph.gif

on this graph you have more V (blue) than you intended and less
H(red)

The graph may be accessed again by going to the LINKS page of the
site in the Humalog section and clicking on: