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c/t2dglp1·posted 1 months ago by u/stablecoin_steve

why does nobody talk about A1c

CGM Cold Box ×3

Genuine question, and the title is the question: why does nobody talk about A1c.

My TSH moved and it turned out to have nothing to do with glucose at all.

Variability dropped before the average did, which was visible on the sensor and invisible on the lab result.

Continuous monitoring shows the shape: postprandial excursions, overnight behaviour and time in range. Two people with identical A1c can have very different distributions.

Sceptical readings welcome. The confident ones are the ones I distrust.

761 up / 109 down88% upvoted21 commentsid 1sktln3 Jun 2026

21 comments

12 in this archive, depth 3

best — the order this archive was captured in

u/nhs_waitlist_nUK135 points·1 months ago·edited

Certain conditions affect A1c independently of glycaemia. If a result looks inconsistent with the sensor data, that is a question for whoever manages your care rather than for this board.

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u/kasper_cabrera-16 points·1 months ago

Disagree — that is an obesity trial endpoint and this thread is about glycaemic control.

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u/ingrid_correia-21 points·1 months ago

postprandial excursions are where most of the improvement shows up first

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u/emil_okwuosa1 point·1 months ago

Yes — the person managing your diabetes is the one to talk to, and this board is explicit about that.

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u/neha_falk0 points·1 months ago

Is that a first-day sensor reading?

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u/arne_nyberg83 points·1 months ago·edited

That A1c change is inside the assay’s variability and the interval you measured over is too short.

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u/fasting_insulin_fMOD57 points·1 months ago

Retitled — the original quoted an obesity endpoint as a glycaemic one.

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[deleted]23 points·1 months ago

[deleted]

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u/slow_logbook_notes3034 points·1 months ago

A1c reflects average glycaemia over roughly the preceding three months, weighted towards the most recent weeks. It cannot show variability and it lags any change you make.

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u/bianca_demir16 points·1 months ago

Agreed on variability. Two people with the same average can have completely different days.

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u/stablecoin_steveOP12 points·1 months ago

Kept fingersticks alongside the sensor for two weeks to sanity-check it. Worth doing once.

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u/milan_chukwu4 points·1 months ago

sensor accuracy varies and the first day of a sensor is the worst

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About c/t2dglp1

Type 2 diabetes as the original indication: A1c trajectories, CGM traces, hypoglycaemia risk when stacked with sulfonylureas or insulin, metformin combinations, and why the weight-loss conversation sometimes drowns out the glycaemic one.

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