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Evidence-based GLP-1 & peptide discussion since 2023
ForumsCOA & Analytical TestingCOA database project — crowdsourced vendor test results Page 3

COA database project — crowdsourced vendor test results

DataDave Sun, May 31, 2026 at 8:16 PM 26 replies 495 viewsPage 3 of 6
jason_sac26
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Jan 2026
Sacramento, CA
Jun 1, 2026 at 12:31 AM#11

Thank you DeniseRN_TPA! This is incredibly helpful. Taking this to my next appointment. 🙏

23 23pete_RVA, CarlaRPh_TPA, steph_laguna and 20 others
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Dr.AddMedPHL
Senior Member
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6,234
Mar 2024
Philadelphia, PA
Jun 1, 2026 at 12:48 AM#12

Slightly tangential to COA database project but DataDave reminded me — does anyone have experience combining this with metformin?

I know it is not exactly on-topic but it seems related enough to ask here rather than starting a new thread. Apologies if this has been covered — I did search first.

Last edited: Jun 1, 2026 at 2:48 AM
9 18sarah_nash92, FitDadDave, RunnerRach and 6 others
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greg_boulder
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Jul 2024
Boulder, CO
Jun 1, 2026 at 1:05 AM#13

Thanks for sharing this, DataDave. A few questions about your COA database project experience:

  1. What dose did you start at?
  2. How long before you noticed side effects improving?
  3. Did your provider have any specific recommendations about COA database?

I am in a similar boat and trying to learn from others' experiences before my next appointment.

Last edited: Jun 1, 2026 at 3:05 AM
22 23Dr.DermMIA, fiona_VT, denise_HTX and 19 others
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DataDave
Senior Member
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Apr 2024
Washington
Online
Jun 1, 2026 at 1:22 AM#14

OP here — wow, did not expect this much response! Thank you all for the thoughtful replies on COA database project .

To answer Dr.AddMedPHL: I started tracking everything in a spreadsheet from day 1.

Quick update: I will post a proper update thread soon. Thanks again for the evidence-based discussion — this is exactly why I posted in a science-based community. 🙏

6 6amsterdam_pete, LondonLisa, mike_nyc and 3 others
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DoseLogDan
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567
Feb 2025
Montana
Jun 1, 2026 at 1:39 AM#15

Adding my data to this COA database project discussion:

MetricBaselineMonth 3Month 8
Weight246 lbs216 lbs201 lbs
A1C7.0%5.8%5.4%
hsCRP5.02.01.2

Protocol: Semaglutide 2.4mg/wk, resistance training 3x/wk, protein 1.3g/kg/day.

30 23carlos_SATX, sophie_paris, mel_PDX and 27 others
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