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 three years of reconstitution threads, summarised so you do not have to read them — 48 comments in the full submission. View in context.
896
c/reconstitution·submitted 1 months ago by u/dilara_szabo

three years of reconstitution threads, summarised so you do not have to read them

PSAbranch of 7 comments

three years of reconstitution threads, summarised so you do not have to read them. Not a hot take, just something I have not seen said plainly here. Wrote the date on the vial as well as the concentration after losing track of which one was opened first. Shook the first vial because nobody told me not to. It was…

Read the full submission and all 48 comments →

This branch

7 comments, started 1 months ago
u/yusuf_achebe68 points·1 months ago

if the maths gives you a fraction of a unit, change the concentration

replysharereportpermalink
u/anjali_tamm45 points·1 months ago·edited

How many mg in the vial and how many mL are you adding?

replysharereportpermalink
u/saskia_mwangi19 points·1 months ago

label the vial with the date as well as the concentration

replysharereportpermalink
u/sleep_apnea_sam-32 points·1 months ago

bacteriostatic water has the preservative, sterile water does not

replysharereportpermalink
u/sock_puppet_spotter1 point·1 months ago

Bacteriostatic or plain sterile water?

replysharereportpermalink
u/honest_syringe_maybe1 point·1 months ago

more water is not more drug, it is the same drug in a bigger volume

replysharereportpermalink
u/karim_ilunga26 points·1 months ago

Small fix — a U-100 syringe is 100 units per mL. If yours is marked differently it is not U-100 and the whole calculation changes.

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

Sigma-Aldrich Standards

Certified reference materials for peptide identity and purity work.

sigmaaldrich.com
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 →