Re: Ketone meter reads low-

[Guest guest]

Thanks for the information, . It explains why we have the

different readings. I didn't know about this difference early in

the diet, and when Ethan's ketones were low (3.2 or something like

it, on our home meter) we raised his ratio to 4.5:1. That was a

tough few months, and now I wonder if it was even necessary. Oh

well, that is looking back. But maybe others can use this

information to avoid the same mistake.

Hey, how's doing? Is he feeling well? I've been out of

touch a few weeks.

Thanks for your input. YOu are vital to this group!

Gretchen

> Hi Gretchen,

> I think you will find that the reason for this is that a

fingerprick blood

> sample from a home metre is 'diluted' with plasma etc from a

capillary test.

> Whereas Lab bhb tests are usually taken direct from the vein.

> We add 30% to home tests to get a rough lab vein equivalent,

(asked our

> lab how much to add once we realised this, and they approximated

this figure

> for us) and comparisons in hospital with since then have

usually

> shown this to be pretty accurate.

> If you take your own reading of 5.4 and add 30 % (1.62) this

gets a total

> of 7.02, which is pretty close to your lab one.

> If the lab one was capillary as well, then um, pass.....

> The bhb references given by Freeman are all vein, not capillary

based btw,

> when they did their study all the metres used were calibrated to

equate to

> vein readings.

>

>

>

>

> ----- Original Message -----

> From: " gretchen_kissock "

>

> > About the MediSense Precision Xtra meter:

> > We use it. It was developed for diabeties patients. We get a

> > lowere ketone reader on it than the blood labs get. We

suspected

> > this, and then to test it one day we did a stick with the

Precision

> > meter just before a lab draw. The lab test was 6.9 and our

> > Precision ketone read was 5.4. So, others may want to check

their

> > meters as well.