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 [PSA] your bac water is fine, your fridge door is not — 60 comments in the full submission. View in context.
1.1k
c/reconstitution·submitted 3 days ago by u/katrin_marchetti

[PSA] your bac water is fine, your fridge door is not

PSAbranch of 9 comments

Been lurking in c/insurancefights for about 17 months and finally have something worth posting. Short version: week 14, 10mg, and dead space is the bit I still cannot get a straight answer on. I have read the wiki, I have read the last 29 threads, and the answers split roughly down the middle. What I actually want to…

Read the full submission and all 60 comments →

This branch

9 comments, started 2 days ago
u/yusuf_achebe97 points·2 days ago

Two vials, two different concentrations, forgot which was which, almost made a 14 times error. Now I label everything.

replysharereportpermalink
u/clara_weiss46 points·2 days ago

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

replysharereportpermalink
u/soren_zamora44 points·2 days ago

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

replysharereportpermalink
[removed]70 points·2 days ago

[removed by moderator]

replysharereportpermalink
u/iman_falk44 points·2 days ago

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

replysharereportpermalink
u/tomas_kimani15 points·1 days ago·edited

30mg vial, 2mL water, concentration is 30/2 — write it on the vial afterwards

replysharereportpermalink
u/elodie_grimaldi26 points·1 days ago·edited

5mg vial, 1mL water, concentration is 5/1 — write it on the vial afterwards

replysharereportpermalink
u/nadia_kjaer9 points·1 days ago

Show the arithmetic. Where did the units come from?

replysharereportpermalink
u/marta_weiss6 points·1 days ago

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

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 →