PeptideCalculations
15 mg/mL · 15,000 mcg/mL · 150 mcg per U-100 unit

15 mg vial + 1 mL bacteriostatic water

A 15 mg vial reconstituted with 1 mL comes to 15 mg/mL. Every unit on a U-100 insulin syringe then carries 150 mcg, so 500 mcg is 3.3 units (0.033 mL) and the vial holds 30 draws of that size.

Units for each amount

15 mg vial + 1 mL = 15 mg/mL (15,000 mcg/mL, 150 mcg per unit on U-100)
DosemLU-100 unitsU-40 unitsDoses per vial
50 mcg0.00330.330.13300
100 mcg0.00670.670.27150
150 mcg0.0110.4100
200 mcg0.0131.30.5375
250 mcg0.0171.70.6760
300 mcg0.0220.850
400 mcg0.0272.71.137
500 mcg0.0333.31.330
750 mcg0.055220
1 mg0.0676.72.715
1.5 mg0.110410
2 mg0.1313.35.37
2.5 mg0.1716.76.76
5 mg0.3333.313.33
10 mg0.6766.726.71

Same vial, other volumes

The mass does not move. Only the concentration and the unit count do.

Watermg/mLmcg per unit500 mcg =
0.5 mL303001.7 unitstable →
1 mL151503.3 units
1.5 mL101005 unitstable →
2 mL7.5756.7 unitstable →
2.5 mL6608.3 unitstable →
3 mL55010 unitstable →
5 mL33016.7 unitstable →

Same concentration, different vial

These pairs also come to 15 mg/mL, so their unit counts match this page exactly; only the number of draws per vial differs: 30 mg + 2 mL.

Try other numbers

mL
Draw to
—units
— mL on a U-100, 1 mL barrel
Concentration
—mg/mL
— mcg per unit
Doses in the vial
—
of

15 mg + 1 mL questions

What concentration is 15 mg in 1 mL?

15 mg divided by 1 mL is 15 mg/mL, which is 15,000 mcg/mL. On a U-100 syringe each unit holds 0.01 mL, so one unit carries 150 mcg.

How many units is 500 mcg from a 15 mg vial with 1 mL?

500 mcg divided by 15,000 mcg/mL is 0.033 mL, which is 3.3 units on a U-100 syringe and 1.3 units on a U-40 syringe. The vial holds 30 draws of that size.

What if I add 1.5 mL instead of 1 mL to the 15 mg vial?

The mass stays 15 mg. With 1.5 mL the concentration is 10 mg/mL instead of 15 mg/mL, so the same amount per draw needs more units: 500 mcg becomes 5 units instead of 3.3.

Does a 15 mg vial hold 1 mL?

Usually. Most lyophilized peptide vials are 2 mL or 3 mL glass, and 1 mL fits with room to swirl. Check the vial if it is an unusually small format.

Brands we recommendIndependent. No affiliation with any brand, no affiliate links, no referral codes, no paid placements.
  1. 1Licensed Peptides two accredited labs on every lot, certificates public, card and Apple Pay checkout
  2. 2Core Peptides long track record, public certificates, wide catalog
  3. 3Ascension Peptides public third-party testing, clear pricing