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Blood Glucose Measurements?

Commented on August 06, 2014
Created August 04, 2014 at 9:58 AM

I received a blood glucose meter this morning, just looking for some advice using it...

I don't eat breakfast so I should do a fasting test now I think, then again after a starchy meal to see how i'm handling the carbs right? How long after the meal should I wait?

What range should my measurements be within fasting & post-prandial?

My fasting level right now is 5.1 mmol/l, which I think is decent considering i ate a considerable amount of carbs last night (150g+ net carbs) and i usually eat low carb

Does the paleo crowd differ from what they'd consider normal at the docs?

Thanks for any advice

Medium avatar

(138)

on August 06, 2014
at 02:28 PM

Such a relief to hear that man!

Be157308a0438e382b88d9db4c12ab30

on August 06, 2014
at 02:22 PM

No, that's a sign that you have perfectly normal blood glucose. Your average is 5.1 = 91 mg/dl? That's perfectly fine. The fact that 6.1 is the highest you can get it after a big meal confirms you're not diabetic or insulin resistant in any way shape or form.

Seriously, those numbers are perfect, you have nothing to be concerned about.

Medium avatar

(138)

on August 06, 2014
at 12:03 PM

After a couple days testing it seems my BG stays around 5.1mmol on average, after a large meal the highest it went was 6.1mmol but it often drops to 4.8/4.9mmol after eating. Not sure if that's a concern really, possible sign of some insulin resistance?

Be157308a0438e382b88d9db4c12ab30

on August 05, 2014
at 03:06 PM

Glad to be of help, good luck.

Medium avatar

(138)

on August 05, 2014
at 02:56 PM

Thanks, appreciate the advice man

Be157308a0438e382b88d9db4c12ab30

on August 05, 2014
at 01:55 PM

You're definitely not diabetic, if you were, you're BG would be through the roof after a meal like that. Your morning fasting is a little bit high, but that's very common. If you want, you can get your HbA1c tested, if you have the means, since that one gives you a better idea of your "average" blood glucose throughout the day, not just that pesky morning BG.

Medium avatar

(138)

on August 05, 2014
at 01:37 PM

Good question - I've been eating mostly ketogenic for a while as I had a weird intolerance of carbs, mainly torturous amounts of sweet saliva pouring into my mouth after eating any carbs. I noticed that recently when I eat carbs I don't get those symptoms anymore so wanted to try out keto-cycling and want to keep an eye on my BG when i'm switching back/forth.

3ce6a0d24be025e2f2af534545bdd1d7

(26217)

on August 05, 2014
at 01:33 PM

Big question -- Why are you measuring blood glucose? Are you diebetic?

Be157308a0438e382b88d9db4c12ab30

on August 05, 2014
at 12:31 PM

If you want to bring your blood glucose down significantly, cut the starch and lower your protein intake and watch it drop. Just so you know, if you eat an excess of protein while you're eating low-carb, the liver will use it to make glucose, lots of it.

Medium avatar

(138)

on August 05, 2014
at 12:31 PM

Yeah, id love an excuse to eat half a kilo of potatoes everyday but i'd likely be kidding myself. At least when I had my 3,000kcal meal last night I didn't go much above 6mmol and soon dropped down to 4.8mmol. Right now just happy that i'm not diabetic!

Be157308a0438e382b88d9db4c12ab30

on August 05, 2014
at 12:27 PM

You should be cutting out some starch. But just so you know, morning blood glucose measurements are usually the highest of the day (at least for me they are). You might be tempted to think it was something you ate the night before but in reality it is your liver dumping a bunch of its stored glycogen as glucose into your blood stream while you sleep. The more glycogen your liver has available, the higher your blood glucose will go. Also don't forget, stress hormones may also raise blood glucose, as well as intense exercise. Try it out: run for a bit and do some push-ups and then take it.

Medium avatar

(138)

on August 05, 2014
at 11:09 AM

Thanks, it may not be related but after eating all that lovely starch last night I feel really foggy today and am seriously craving more starch, not sure if that means I should be eating more of it or cutting it out! For now going to go back to keto & keep an eye on my levels....

543a65b3004bf5a51974fbdd60d666bb

(4493)

on August 05, 2014
at 10:44 AM

you may 'just' be physiological insulin resistant, if that is the case, then dropping 'some of those carbs asap' will not reduce your morning fasting bs reading. you can give it a try & see.

i suggest you have a read up on a couple of subjects; 1. the dawn phenomenon (aka dawn effect). 2. physiological insulin resistant.

here's a couple of links you can start with;

1. High Fasting Glucose on a Low Carb Diet

2. Does Eating a Low Carb Diet Cause Insulin Resistance?

Medium avatar

(138)

on August 05, 2014
at 07:42 AM

So yesterday my fasting was 5.1mmol, then after several hours fasting it was 5.7mmol, after eating a 3,000kcal meal 70f 20c 10p, it first went to 5.1mmol, then a bit later 6.1mmol, then later in the night dropped to 4.8mmol, then this morning it was 6mmol.

So i'm thinking i should drop out some of those carbs asap if my morning fasting is 6mmol! Although i've read that low carbers tend to have higher fasting glucose... confused?

Medium avatar

(138)

on August 04, 2014
at 01:40 PM

Thanks, i'm usually strict keto but currently trying out cyclical keto, partly to gain weight and partly because I simply enjoy some carbs a couple days per week. So far it's going well but thought I better check my BG just to make sure i'm within range when switching back/forth.

Medium avatar

(138)

on August 04, 2014
at 10:36 AM

Thanks for the info, I usually eat ketogenic but last night ate 150g+ net carbs, my fasting glucose just now (15 hours since last meal) was 5.1 mmol/l

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2 Answers

0
Be157308a0438e382b88d9db4c12ab30

on August 04, 2014
at 01:13 PM

I disagree with the previous post, you could very well be on a low carb diet and not have blood glucose below 70mg/dl. As a matter of fact the people who do low carb and have a blood glucose of less than 70mg/dl are usually the ones who just start out and switched from a high carb diet.

Normal BG for people on low carb diets is the same as for everyone else. Usually somewhere between 70 and 100 mg/dl. The reason is that when less carbs are eaten, the body over time adjust to lower carb loads by producing less insulin. It is a classic negative feedback mechanism: more glucose causes a rise in insulin which causes glucose to come down which causes insulin to come down as well ultimately resulting in a steady blood glucose level and a steady insulin level.

If you're on a low carb diet, your blood glucose should be in a normal range, your insulin however should be very, very low. You're going to get your glucose from protein (amino acids) and from fat (the glycerol). If your blood glucose is too high, eat less (especially protein), if it's too low, eat more.

Medium avatar

(138)

on August 04, 2014
at 01:40 PM

Thanks, i'm usually strict keto but currently trying out cyclical keto, partly to gain weight and partly because I simply enjoy some carbs a couple days per week. So far it's going well but thought I better check my BG just to make sure i'm within range when switching back/forth.

0
736e0ce86177b4b2b00101c62d46c723

on August 04, 2014
at 10:34 AM

Ideally you want to leave it overnight to do a fasting check. Doctors recommend no food for 12 hours. If you're checking to see how you respond to a meal, go 15-20 minutes after the meal, and then again 2 hours later.

Your fasting level should be around 4mmol/l (about 70 md/gl). After a meal could go up to around 6 mmo/l (110 md/gl) if you ate a lot of carbs. Hopefully the 2 hour check will be slightly lower than your 15 minute post meal check.

This is a good range regardless of diet. You may notice however your fasting level may be lower that 4mmol/l if you're sticking to a very low carb diet.

Medium avatar

(138)

on August 04, 2014
at 10:36 AM

Thanks for the info, I usually eat ketogenic but last night ate 150g+ net carbs, my fasting glucose just now (15 hours since last meal) was 5.1 mmol/l

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