GLPHubglpresearchhub.com
Read-only archive. GLP Research Hub is a static community record — nothing here is for sale, no account is needed, and no vote you cast is counted. Why?
400
c/reconstitution·posted 7 days ago by u/tl_dr_tina

[Correction] the concentration table going round is off by a factor of ten

Correction Cold Box ×1

Long-ish post, sorry. tl;dr at the bottom.

I have been tracking bacteriostatic water against eGFR for 17 weeks because I could not find anyone who had. The correlation is weaker than I expected, which is itself mildly interesting given how confidently people link the two in here.

Caveats up front: one person, one lab, one assay, no control, and I changed my training in the middle of it, which was stupid.

tl;dr: probably real, definitely smaller than the threads imply, and not worth reorganising your week around.

570 up / 170 down77% upvoted26 commentsid j7nxk822 Jul 2026

26 comments

18 in this archive, depth 4

best — the order this archive was captured in

u/bac_water_banditMOD60 points·6 days ago

Flair changed to match the content. Read the sidebar before posting next time and we are square.

replysharereportpermalink
u/vito_beaulieu21 points·6 days ago·edited

No. This is the kind of confident post that gets copied into a screenshot and repeated for years. Where is the evidence.

replysharereportpermalink
[removed]14 points·6 days ago

[removed by moderator]

replysharereportpermalink
u/rasmus_kuipers9 points·6 days ago

[removed by moderator]

Adding to this: reconstitution is doing more work than the comment implies.

replysharereportpermalink
u/ledger_modmod · vetting17 points·6 days ago

i am begging people to write down the concentration

replysharereportpermalink
u/marisol_frisk38 points·6 days ago

You have restated the marketing copy. What is the actual substance here.

replysharereportpermalink
u/yusuf_nakamura32 points·6 days ago

more water means more units for the same dose, which means finer resolution

replysharereportpermalink
u/anya_antonsen10 points·6 days ago

swirl, do not shake, or you are courting oxidation

replysharereportpermalink
u/yusuf_nakamura40 points·6 days ago

Yeah, showing the arithmetic is the fastest way for someone to spot the error.

replysharereportpermalink
u/ruben_cabrera14 points·6 days ago

Yeah, showing the arithmetic is the fastest way for someone to spot the error.

Yes, exactly this, and it is the bit that took me 48 weeks to accept.

replysharereportpermalink
u/alcohol_aversion13 points·6 days ago

Respectfully this is a sample of one presented as a finding.

replysharereportpermalink
u/runa_grimaldi25 points·6 days ago

never post a calculation as advice without stating the concentration

replysharereportpermalink
u/tl_dr_tinaOP18 points·6 days ago

stopper coring on the 19th draw because you keep using the same entry point. rotate.

replysharereportpermalink
u/alcohol_aversion12 points·6 days ago

the concentration on the vial in marker is the most important step

replysharereportpermalink
u/elin_ferrari6 points·6 days ago

Edit to your parent would help — the concentration you quoted assumes one scenario and you have written another above it.

replysharereportpermalink
u/ruben_cabrera13 points·5 days ago

Is that 30mg vial or 37mg?

replysharereportpermalink
u/ilias_cabrera4 points·5 days ago

Is that 30mg vial or 37mg?

Adding to this: concentration is doing more work than the comment implies.

replysharereportpermalink
u/tl_dr_tinaOP10 points·6 days ago

never post a calculation as advice without stating the concentration

replysharereportpermalink
Permalinked branches
Deep branches get their own page so a single reply chain can be linked and read on its own.
About c/reconstitution

The arithmetic and the technique. Bacteriostatic versus sterile water, reconstitution volume as a concentration choice, converting mg/mL into insulin-syringe units, dead space, swirl-not-shake, stopper coring, and how long a reconstituted vial is actually good for. Math errors get corrected fast and politely.

88kmembers
130submissions
Aug 2023created
submissions / month, last year
Sponsored

Janoshik Analytical

Independent HPLC and mass spec. The number you get is the number they found.

janoshik.comSponsored

GL Biochem (Shanghai)

Custom peptides and amino acids direct from the manufacturer since 1998. ISO 9001 / cGMP. Batch COA every order.

glbiochem.net
More in c/reconstitution
c/reconstitution rules
  1. Show your numbers. "How many units?" with no mg and no mL cannot be answered.
  2. Never post a calculation as advice without stating the concentration it assumes.
  3. No sterile-compounding-for-others discussion. Personal handling only.
  4. Independent community. Nobody here sells anything, and anyone who tries is banned.
  5. Not medical advice. Describe what you did; never prescribe to a stranger.
  6. Claims need evidence. Batch numbers, dated screenshots, independent test reports, or a citation.
  7. No referral links, discount codes or affiliate URLs. Permanent ban, no appeal.
  8. No contact handles, wallet addresses or tracking numbers — they identify people.
  9. Be recognisably decent. Disagree hard, insult nobody.
Full rules and how they are enforced →
Moderators
u/bac_water_banditu/vial_math_verau/units_not_mgu/swirl_dont_shake
Volunteers. Unpaid, unaffiliated, and reachable through modmail only.
Before you read on

Several compounds discussed on GLP Research Hub are sold for research use only and are not approved for human use anywhere. Nothing here is medical advice and none of it is written by your clinician. If a post reads like an instruction, treat it as a description of what one stranger did.

Full disclaimer →