PeptideStack
5.2kquestions
20kanswers
220users

How many units on a U-100 insulin syringe is a 2 mg dose at 8 mg/mL?

Asked 26 Oct 2025Modified 9 months agoViewed 4.9k times
11

For reference: a U-100 insulin syringe · 2 mg · 8 mg/mL.

I would rather understand the derivation than memorise the outcome.

Two people I asked gave two answers that differ by a factor of ten, which is suggestive.

Can someone show the working rather than just the answer?

dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

764 questionsinsulin-syringe
insulin-syringe

U-100 and U-40 insulin syringes as measuring instruments. A U-100 syringe is graduated in insulin units where 100 units equals 1 mL, so one unit…

244 questionsreconstitution
reconstitution

Taking a lyophilised vial to a solution of known concentration: choice of diluent, volume selection, how to add liquid without shearing the cake,…

313 questions
shareeditfollowflag
CH
askedcal_hennessy17k2726 Oct 2025
2Is this U-100 or U-40? It changes the arithmetic by a factor of two and a half. – Dr_Idris_Coulibaly 5 months ago
add a comment

No answers yet

This question has not been answered. It has been viewed 4.9k times, which suggests the question is of interest and the answer is not obvious. If you can answer it with a source or a worked calculation, it will be read. See how to ask and answer.
Sponsored

Sigma-Aldrich - Certified Reference Materials

Analytical standards and reagents with traceable certificates. Every quantitative result you read inherits the accuracy of the standard behind it.

Shop standards

Your answer

Ask PeptideStack is a static archive. Posting is closed, but the norms are worth stating: answer the question that was asked, show your working, cite the trial or the certificate, and say plainly where the evidence runs out.

Not medical advice. Research-use-only compounds are not approved for human use.