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ForumsLab Results & BiomarkersA1C from 7.2 to 5.1 — November 2025

A1C from 7.2 to 5.1 — November 2025

DanielChem_CHI Thu, May 15, 2025 at 6:36 PM 12 replies 1,484 viewsPage 1 of 3
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DanielChem_CHI
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Mar 2024
Chicago, IL
May 15, 2025 at 6:36 PM#1

Fasting glucose improved within weeks and my HbA1c barely moved for three months, which I now understand and did not at the time.

The bit I cannot resolve on my own is why A1C lags the way it does, and what to look at in the meantime if you want to know sooner.

I would rather have one careful answer than five confident ones.

1 21fiona_VT
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CarlaRPh_TPA
Senior Member
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Jan 2024
Tampa, FL
May 15, 2025 at 6:57 PM#2
DanielChem_CHI said:
Fasting glucose improved within weeks and my HbA1c barely moved for three months, which I now understand and did not at the time.

Patient selection optimization for glycaemic control: emerging predictive biomarkers for GLP-1 agonist response include:

BiomarkerAssociationEvidence Level
Baseline BMIHigher BMI → greater absolute weight lossStrong
Fasting insulinHigher insulin → better responseModerate
GLP1R gene variantsrs6923761 → variable responsePreliminary
Baseline hsCRPHigher CRP → greater CV benefitModerate
Early weight loss (4 wk)≥3% at 4 wks → strong predictor of ≥10% at 68 wksStrong

The 4-week early responder criterion is the most clinically actionable: if you haven't lost ≥3% by week 4 at a therapeutic dose, discuss optimization strategies with your provider.

50 20ricardo_MIA, BrianDallas92, labquiet_amy and 47 others
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pete_RVA
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Dec 2024
Richmond, VA
May 15, 2025 at 7:18 PM#3
CarlaRPh_TPA said:
Patient selection optimization for glycaemic control: emerging predictive biomarkers for GLP-1 agonist response include: Biomarker Association…

Fasting insulin is the lab my functional medicine doctor cares about most for glycaemic control: it's a much earlier marker of metabolic dysfunction than glucose or A1C.

My fasting insulin: 23 → 15 → 5 uIU/mL over 9 months. Target is <7. By the time your fasting glucose is elevated, your insulin has been elevated for YEARS trying to compensate.

Ask your doctor to include fasting insulin in your bloodwork panel. It's cheap (~$20) and incredibly informative.

49 19Admin, Dr.Martinez, mike_mod and 46 others
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TomTeleRx
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Feb 2025
Delaware
May 15, 2025 at 7:39 PM#4
DanielChem_CHI said:
Fasting glucose improved within weeks and my HbA1c barely moved for three months, which I now understand and did not at the time.

Can confirm. Same sequence, different timescale. Nothing to add that would improve it.

48 18HPLC_Greg, LibrarianMeg, bri_stats and 45 others
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PedsEndoPhilly
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Jun 2024
Philadelphia, PA
May 15, 2025 at 9:33 PM#5

From the other side of the consultation, briefly.

Complete metabolic panel trending on glycaemic control — sharing because comprehensive data helps everyone:

TestBaselineMonth 3Month 6Month 12
Glucose (fasting)1131039387
Insulin (fasting)191797
HOMA-IR5.53.92.11.2
Uric Acid8.66.36.04.9

The insulin resistance improvement (HOMA-IR) is what my endo focuses on most. Going from 5.5 to near 1.0 is a metabolic transformation.

47 17MikeNYC_runner and 44 others
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