Wondering if I can trust my BG numbers…?

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Lauren & Red

Member Since 2021
I jinxed myself when I said testing him when he was asleep was working. Because right after I said that, it stopped working. The numbers I successfully got from him that way were all with the expired strips.

He cannot be bribed and it’s not getting easier. I have to burrito wrap him but he bites and hisses and howls like I’m murdering him. My neighbors must think I’m this abusive monster. I am so nice and calm and give praise in my sweetest voice despite the fact that he’s hurting me. I’ve even tried to sing to him. Nothing helps. I can test my other cat, no problem in under 30 seconds.

Everyone says that going to the vet gives an inaccurate blood glucose reading because stress can raise the numbers so much. This is certainly true for my cat. He does horribly whenever we leave the house. The problem is, he is so stressed and noticeably upset before/during testing. It usually takes me 20 minutes to get a reading and he knows when tests are coming so he gets stressed before we start. I’m beginning to question whether or not I can rely on my numbers.

The reason I started questioning it was because last night he looked “off”. I can’t explain it but the kind of the look pets get when they’re sick. If anyone knows what I mean? He was also very lethargic, which seems to happen after I gave him insulin. On top of that, he had a “stoned” look with glossy, heavy eyes. I had this gut feeling that something was wrong and that his PMPS would be low. But it wasn’t. He seemed out of it and almost confused at times too. Plus, shaky legs when getting up. Still eating plenty and drinking a lot.

I also use urine glucose test strips because I don’t see the harm in having more info. Anyway, they were always at the highest level. Or second highest.
The past two days, they’ve been negative. Which makes no sense. There’s no way to determine hypo with urine strips which is why they are unreliable. His BG numbers say he’s not close to hypo. Not even low enough to be considered good. How can there be nothing in his urine all of the sudden??

Last night I was scared that my numbers might be wrong and the fact that his glucose urine strips were negative on top of the symptoms I was seeing. So I decided to skip his dose. I thought it was better to be high than to risk insulin if it was the cause. Today he looked back to normal and I decreased the dose a little but gave his injection.

So what do I do when my numbers tell me one thing, but his behavior says another? He’s starting to act a little off again. Am I just crazy? Or could he be reacting to insulin? He’s not sleeping so heavily I can’t wake him. He’s still eating and drinking and moving around ok. He’s not vomiting or having diarrhea. It’s just his eyes mostly and an overall look and demeanor.

I’ve been considering the libre but it ‘s likely not going to help. He freaks out when I put stuff on him. I took a small medicine bottle lid and put the top, flat side on his back (secured with gauze wrap—not too tight but secure) as an experiment. He was flipping on his back, rubbing against walls, stairs and other things around the house. Wouldn’t stop until he got it off and he did so in less than 10 minutes. Slightly amusing, but proved my theory that he won’t cooperate with a libre. Of course, because it would solve all of my problems.

So bottom line— do I trust the BG readings despite the stress and continue to dose based on the numbers I get? Or is that potentially dangerous, all things considered?
 
He was also very lethargic, which seems to happen after I gave him insulin
He's likely to be at his most lethargic when you give him his insulin, as that is the point in the day or night when his blood sugar is at its highest. The insulin doesn't kick in for 2-3 hours so exactly when after his shot does he seem lethargic?

The past two days, they’ve been negative. Which makes no sense. There’s no way to determine hypo with urine strips which is why they are unreliable. His BG numbers say he’s not close to hypo. Not even low enough to be considered good. How can there be nothing in his urine all of the sudden??
Remember that he could still be around 200 even if the urine strips are showing negative. 200 is nowhere close to hypo.

ETA: based on your SS numbers, he's not getting anywhere close to hypo numbers.
You did a control solution test for your current meter, yes?
 
Wow, that's pretty scary, Lauren.
If Red were my kitty, I would ask the vet to sedate before inserting that Libre you are considering. Then, Red would simply have to wear the cone of shame.
Health has to come first here until you can get some control.
 
I also use urine glucose test strips because I don’t see the harm in having more info. Anyway, they were always at the highest level. Or second highest.
The past two days, they’ve been negative. Which makes no sense. There’s no way to determine hypo with urine strips which is why they are unreliable. His BG numbers say he’s not close to hypo. Not even low enough to be considered good. How can there be nothing in his urine all of the sudden??

Hi Lauren
The reason that the urine strips are showing negative is because Red is dropping below the renal threshold (there is no glucose spilling over from his kidneys into his urine) and that's a good sign. As his BG drops even more you will find that the strips are always showing negative.
Please don't use the urine strips to test his blood glucose it's nowhere near accurate, just use them for testing for glucose in the urine and testing for ketones because your hand held monitor will give you the correct readings not the urine strips.
I never use the urine strips as a monitor as such, just to see if his urine was clear of glucose and ketones.
 
Starburst is very particular about things being on her but she doesn't mind the Libre. She was mad about the sweater for the first afternoon but she's used to it now and has much fewer ear pricks, so I think she understands a bit.
You likely won't need to sedate him and the cone of shame is overkill regarding the Libre. My vet costs @$20, a vet tech shaves the area, adds some tissue glue and attaches it. IF I use another one I may install it myself because my vet is 20 minutes away and I'm getting tired of putting Starburst through the drive for everything right now.
Also, the glucose strips being negative means the blood glucose is going down. I believe the level is in the 200s as average (might be 250 but can't remember) when it doesn't spill into the urine.
https://linksharing.samsungcloud.com/6tJwc7JTPcBq
 
Honestly, the numbers look good but you need a mid cycle test to make sure he isn't going too low that I would say now is the perfect time to try the Libre. The nice thing is it tracks the entire cycle (as long as you scan every 8 hours) so even if he dipped "low" briefly it would be caught. Starburst dipped in the 60s twice last night, but I wouldn't have caught the second time as I was asleep.
 
Have you tried testing the strips/meter with an appropriate control solution? That will rule out an error happening there.
He's likely to be at his most lethargic when you give him his insulin, as that is the point in the day or night when his blood sugar is at its highest. The insulin doesn't kick in for 2-3 hours so exactly when after his shot does he seem lethargic?


Remember that he could still be around 200 even if the urine strips are showing negative. 200 is nowhere close to hypo.

ETA: based on your SS numbers, he's not getting anywhere close to hypo numbers.
You did a control solution test for your current meter, yes?
Wow, that's pretty scary, Lauren.
If Red were my kitty, I would ask the vet to sedate before inserting that Libre you are considering. Then, Red would simply have to wear the cone of shame.
Health has to come first here until you can get some control.
Hi Lauren
The reason that the urine strips are showing negative is because Red is dropping below the renal threshold (there is no glucose spilling over from his kidneys into his urine) and that's a good sign. As his BG drops even more you will find that the strips are always showing negative.
Please don't use the urine strips to test his blood glucose it's nowhere near accurate, just use them for testing for glucose in the urine and testing for ketones because your hand held monitor will give you the correct readings not the urine strips.
I never use the urine strips as a monitor as such, just to see if his urine was clear of glucose and ketones.
Honestly, the numbers look good but you need a mid cycle test to make sure he isn't going too low that I would say now is the perfect time to try the Libre. The nice thing is it tracks the entire cycle (as long as you scan every 8 hours) so even if he dipped "low" briefly it would be caught. Starburst dipped in the 60s twice last night, but I wouldn't have caught the second time as I was asleep.
I don’t know if anyone was understanding my actual question/concern. It’s my fault, I’m sorry. I tend to ramble and include a lot of information that really isn’t important. I apologize.

I’m not using the urine strips for anything important. Just out of curiosity. So forget I even mentioned those, please. They don’t matter.

The real question was about my blood glucose numbers possibly being a lot higher than they really are because of stress. No one has answered that.

Does anyone have any thoughts on this? (I’ll copy the main reason for my message and paste it again here):
“Everyone says that going to the vet gives an inaccurate blood glucose reading because stress can raise the numbers so much. This is certainly true for my cat. He does horribly whenever we leave the house. The problem is, he is so stressed and noticeably upset before/during testing. It usually takes me 20 minutes to get a reading. Plus, he knows when tests are coming so he gets stressed before we start. I’m beginning to question whether or not I can rely on my numbers.”

Basically, I’m wondering how the stress my cat experiences for an average of 30 min prior to ear tests, is any different than the inaccurate vet numbers (raised because of stress)? Isn’t it possible they are showing much higher than they really are? Or am I overthinking it?

Does that make sense? Maybe I’m explaining it poorly.
 
The only reason I mentioned the urine glucose strips, was because they were showing negative. And those aren’t current glucose levels. Just where he was at at some point during the day. When he wasn’t stressed. But I’m not using them for anything other than curiosity. I know I can’t monitor him through urine. It doesn’t show where he’s currently at and it’s too hard to interpret the results. I understand that 100%. BG tests are the only readings that matter. I test for ketones and the same strips also test glucose. So please don’t get the wrong idea that I’m trying to monitor him through urine because I’m not.
 
It's a good question. No, the stress of trying to get a sample is not going to change his blood sugar enough to matter. as far as I know. You can still trust your readings. Yes, it is highly possible he is reading a little higher because of the stress, but those are the numbers you're getting and that's what you need to base your decisions on. If anything, when his blood sugar gets low, you'll have a bit more of a safety buffer due to any stress Red has from a reading :)
 
The only reason I mentioned the urine glucose strips, was because they were showing negative. And those aren’t current glucose levels. Just where he was at at some point during the day. When he wasn’t stressed. But I’m not using them for anything other than curiosity. I know I can’t monitor him through urine. It doesn’t show where he’s currently at and it’s too hard to interpret the results. I understand that 100%. BG tests are the only readings that matter. I test for ketones and the same strips also test glucose. So please don’t get the wrong idea that I’m trying to monitor him through urine because I’m not.
I totally get it! The first time I got "neg" on the urine test I freaked out, forgetting that renal threshold is still around 200.
 
It's a good question. No, the stress of trying to get a sample is not going to change his blood sugar enough to matter. as far as I know. You can still trust your readings. Yes, it is highly possible he is reading a little higher because of the stress, but those are the numbers you're getting and that's what you need to base your decisions on. If anything, when his blood sugar gets low, you'll have a bit more of a safety buffer due to any stress Red has from a reading :)
I just read from many different places on the site that the stress of going to the vet can raise BG as much as 180. So I was curious how that compared to the stress he’s experiencing every time we test. Especially because it takes 20-30 minutes to get a number. Sometimes a lot longer. And he gets noticeably upset beforehand— when I start taking the stuff out.
I keep hoping it will get easier and I have to imagine that eventually it will. But for now it’s still a nightmare and I don’t know why. He was abused and had marks on his ears when I rescued him. So it may be triggering past trauma. But I have tested my other cat over a dozen times and have no problem. So I know I’m doing it right.
 
I totally get it! The first time I got "neg" on the urine test I freaked out, forgetting that renal threshold is still around 200.
I keep hearing people say renal threshold. What does that mean? Lol. Not a big deal. I know the urine strips can’t be used to monitor. I’m just wondering what renal threshold means because I feel dumb for not understanding
 
I just read from many different places on the site that the stress of going to the vet can raise BG as much as 180. So I was curious how that compared to the stress he’s experiencing every time we test. Especially because it takes 20-30 minutes to get a number. Sometimes a lot longer. And he gets noticeably upset beforehand— when I start taking the stuff out.
I keep hoping it will get easier and I have to imagine that eventually it will. But for now it’s still a nightmare and I don’t know why. He was abused and had marks on his ears when I rescued him. So it may be triggering past trauma. But I have tested my other cat over a dozen times and have no problem. So I know I’m doing it right.
Poor buddy. There's no way that having his mom chase him around for ear stabs in his own home is anywhere near vet stress though, right? Maybe look at it that way?
I really hope it gets easier. I forget, toe pad idea didn't work out?
 
I keep hearing people say renal threshold. What does that mean? Lol. Not a big deal. I know the urine strips can’t be used to monitor. I’m just wondering what renal threshold means because I feel dumb for not understanding
Oh, at a certain point, the kidneys can't reabsorb/process all the glucose in the blood, and the excess is excreted through the urine. That blood glucose level is iirc around 180-200 in cats. And it's said every cat has a different renal threshold.
 
Oh, at a certain point, the kidneys can't reabsorb/process all the glucose in the blood, and the excess is excreted through the urine. That blood glucose level is iirc around 180-200 in cats. And it's said every cat has a different renal threshold.
Which helps explain why urine strips do very little to determine what’s actually going on. Makes sense. Thanks
 
What did you decide about getting a Libre "installed" at the vet's office under sedation? There would be a couple of vet techs to soothe/control Red.
Then he could wear a cone to prevent dislodging the Libre if that is your fear. You would simply remove the cone at meal time (I have done this when a cat had a wound I did not want licked).
Not all cones are rigid these days. They make some comfy ones that are like puffs of pillow.
I just looked at a few images of the Libre and they can attach where it cannot be accessed easily. Red might not even notice it is there.
 
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