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← Return to Freestyle Libre 3+ sensor
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Diabetes & Endocrine System | Last Active: 2 days ago | Replies (16)
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Thanks for the information. I use the Freestyle Libre 3+. They suggest putting it the back of my upper arm but that seems to give me a different result than my meter. My next blood work is scheduled for next week so I guess I will just hold off before I panic. I was going to change it to the side of my upper arm because that seems to be the more accurate results for me
Replies to "Thanks for the information. I use the Freestyle Libre 3+. They suggest putting it the back..."
The Libre 3+ gets its info from interstitial fluid, not your blood. It is generally a little behind the finger stick reading. Just throw this into your dosing amounts. I usually go by what the Libre says but if very high or low I double check with a finger stick.
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My Libre 3+ is usually within just a few points (higher or lower) of my fingerstick readings with the glucose meter. Occasionally up to 10 points difference, but not as much as my old Libre 3. Haven't noticed any difference between back or side arm sensor placement. I've even used the fronts of my arms a few times -- being careful to avoid muscle, and aiming for the fattier areas.
Some batches may differ, just like different batches of strips -- so I try to alternate the sensor dates when possible.