On the Dexcom and Libre Rash Facebook group, I saw a note posted back in December from someone referencing sensors with an expiration date after August 17, 2017.

“Dex recently changed their mfg process to eliminate a substance that caused rashes in some. Get some expiration date AFTER 8/15/17 …”

Huh.  Interesting.  (Read: HOLY SHIT COULD THIS BE TRUE??!!) I’ve been experiencing a Dexcom adhesive rash since 2012 and despite many conversations with clinicians and diabetes device industry specialists, no one has a solution for this issue.  (No one openly acknowledges this issue, either, which I find weird.)  For several years, I thought I was the only one having a rash reaction to the sensor adhesive, but then the Facebook group popped up and holy shit, there are a lot of us.  (The group currently has over 1900 members.)

Since 2012, I’ve tried several workarounds for this rash issue.  Steroid inhaler spray, barrier tapes, the blessed JnJ Toughpad … nothing eliminates the rash completely but the Toughpad does the best job of giving me seven days of sensor wear.  Fine.  The data and protection I get from using a CGM is worth the itch.  (See also: two solid pregnancies, two healthy kids, an A1C I’m happy with, and a marked decrease in overnight hypoglycemic events.  See also also:  “hypoglycemic events” is a stupid name)

Expiration investigation.

A post shared by Kerri Sparling (@sixuntilme) on

My previous sensor shipment has an expiration date of August 7, 2017.  The shipment I received last week expires in November 2017.  Even though I have a couple August expiration sensors left to use, I’m skipping ahead.  I want to know if the rumors are true.

New one goes in in a few hours.  Here’s hoping.