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?
Single comment threadYou are looking at one branch of [Question] concentration — what am I missing here — 20 comments in the full submission. View in context.
648
c/reconstitution·submitted 1 year ago by u/runa_cabrera

[Question] concentration — what am I missing here

Questionbranch of 5 comments

Genuinely asking, not being difficult. Everyone in c/orforglipron repeats that concentration is important. I believe it, but I have never seen anyone show why, and when I search I get 20 threads of people agreeing with each other. Is there a paper? Is there a measurement? Or is this one of those things that is true…

Read the full submission and all 20 comments →

This branch

5 comments, started 1 year ago
u/tl_dr_tina69 points·1 year ago

Spent 4 weeks confused about concentration math until someone showed me the table. 20mg, 2mL, concentration is 20/2.

replysharereportpermalink
u/arne_restrepo81 points·1 year ago

5mg vial, 2mL water, concentration is 5/2 — write it on the vial afterwards

replysharereportpermalink
u/zaid_balogun64 points·1 year ago

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

replysharereportpermalink
u/soren_zamora40 points·1 year ago

never post a calculation as advice without stating the concentration

replysharereportpermalink
u/wanjiru_varga47 points·1 year ago

Did you write the concentration on the vial?

replysharereportpermalink

← back to the whole thread

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 →