c/bloodwork wiki

What this community is for

What to measure before you start, what to re-measure, and how to interpret movement without panicking. ApoB over LDL-C, HOMA-IR as a crude free tool, ALT and the fatty-liver story, eGFR noise during rapid loss, and the deficiencies that a 1,100-calorie appetite will hand you.

c/bloodwork was created on 12 Nov 2023 and currently has 41,500 members and 95 captured submissions. It sits in the second tier of the site, which mostly affects how fast a question gets answered rather than how well.

Rules, and why each exists

Community rules come first, then the six site-wide rules that apply everywhere on GLP Research Hub. Community rules are enforced by the moderators listed at the bottom of this page; site rules are enforced by everyone.

1. Post reference ranges with your numbers. Units differ by country and lab.
2. Nobody here can tell you what a result means for you. We can tell you what it usually means.
3. Redact identifying details from lab PDFs before posting.

And the site rules, which are short on purpose:

1. Independent community. Nobody here sells anything, and anyone who tries is banned.
2. Not medical advice. Describe what you did; never prescribe to a stranger.
3. Claims need evidence. Batch numbers, dated screenshots, independent test reports, or a citation.
4. No referral links, discount codes or affiliate URLs. Permanent ban, no appeal.
5. No contact handles, wallet addresses or tracking numbers — they identify people.
6. Be recognisably decent. Disagree hard, insult nobody.

Terms you will see

Vocabulary that turns up constantly in c/bloodwork. Each links to the topic page, which collects every submission that touches it.

• bloodwork — discussed frequently in this community — see the topic page for every submission that touches it.
• ApoB — apolipoprotein B — a count of atherogenic particles; a better marker than LDL-C.
• A1c — glycated haemoglobin, a rolling average of blood glucose over months.
• ALT — a liver enzyme; often the first place the fatty-liver story shows up.
• eGFR — estimated kidney filtration rate; noisy during rapid weight loss.
• lipids — the cholesterol panel. Triglycerides usually move first and fastest.
• ferritin — iron stores. A small appetite tanks these quietly.
• baseline labs — the numbers you cannot go back and collect later.

Start here

The twelve highest-scoring submissions in this community. Not necessarily the most correct — the most agreed-with, which is a different thing, and worth remembering when you read them.

1. how much of what we believe about ferritin actually comes from bloodwork threads — 6.6k points, 63 comments, 1 year ago
2. [PSA] lipids are not what most of this community thinks it is — 6k points, 35 comments, 2 years ago
3. ALT — 4 things I got wrong before I got it right — 5.9k points, 46 comments, 2 years ago
4. ferritin — 15 things I got wrong before I got it right — 5.4k points, 37 comments, 1 year ago
5. ferritin — my 22-week log, condensed into one table — 4.8k points, 52 comments, 1 year ago
6. stalled for 15 weeks at 1.7mg and I refuse to panic this time — 4.8k points, 43 comments, 1 year ago
7. [Discussion] can we stop arguing about ApoB until somebody posts a number — 4.6k points, 56 comments, 2 years ago
8. baseline labs are the most under-discussed thing on this board — 4.6k points, 22 comments, 2 years ago
9. the baseline labs question that gets asked weekly, answered properly — 4.5k points, 63 comments, 2 years ago
10. reading eGFR threads from 2024 and half of it aged badly — 4.2k points, 56 comments, 2 years ago
11. [Discussion] can we stop arguing about eGFR until somebody posts a number — 4.1k points, 39 comments, 1 year ago
12. tried ApoB for 18 weeks. here is what happened. — 4.1k points, 51 comments, 1 year ago

Asked constantly

• [Question] eGFR dropped 8 points during rapid loss, should i worry
• [Question] my TSH moved 0.4. is that anything.
• [Meta] the ALT rule is doing its job and people should stop complaining
• why does nobody talk about baseline labs
• week 71 check-in — 23kg down, muscle cramps manageable, one thing confusing me
• genuine question about ALT that I am slightly embarrassed to ask
• [Meta] proposal — a flair for baseline labs posts
• what changed for me between month 2 and month 11
• [Question] ApoB — what am I missing here
• the baseline labs thing finally clicked for me and I want to write it down

If your question is on that list, read the answers there first. If it is not, ask it — that is what the community is for, and "this has been asked" is only a helpful reply when it comes with a link.

Who runs this

Moderation here is done by volunteers who also post as normal members. They are not clinicians, not vendors, and not paid.

• u/lipid_panel_larry — Full panel every 12 weeks since 2023. ApoB is the number I actually watch.
• u/a1c_arc — 9.1 → 5.4 over 14 months with a GLP-1 and a walking habit. Charts in profile.
• u/liver_enzyme_liz — ALT dropped 34 to 19. The fatty-liver story is the underrated one.
• u/gentle_correction — You can be right without being unkind. Usually.