30 mg/mL · 30,000 mcg/mL · 300 mcg per U-100 unit

30 mg vial + 1 mL bacteriostatic water

A 30 mg vial reconstituted with 1 mL comes to 30 mg/mL. Every unit on a U-100 insulin syringe then carries 300 mcg, so 500 mcg is 1.7 units (0.017 mL) and the vial holds 60 draws of that size.

Units for each amount

30 mg vial + 1 mL = 30 mg/mL (30,000 mcg/mL, 300 mcg per unit on U-100)
Dose	mL	U-100 units	U-40 units	Doses per vial
50 mcg	0.0017	0.17	0.07	600
100 mcg	0.0033	0.33	0.13	300
150 mcg	0.005	0.5	0.2	200
200 mcg	0.0067	0.67	0.27	150
250 mcg	0.0083	0.83	0.33	120
300 mcg	0.01	1	0.4	100
400 mcg	0.013	1.3	0.53	75
500 mcg	0.017	1.7	0.67	60
750 mcg	0.025	2.5	1	40
1 mg	0.033	3.3	1.3	30
1.5 mg	0.05	5	2	20
2 mg	0.067	6.7	2.7	15
2.5 mg	0.083	8.3	3.3	12
5 mg	0.17	16.7	6.7	6
10 mg	0.33	33.3	13.3	3

Same vial, other volumes

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

Water	mg/mL	mcg per unit	500 mcg =
1 mL	30	300	1.7 units
1.5 mL	20	200	2.5 units	table →
2 mL	15	150	3.3 units	table →
2.5 mL	12	120	4.2 units	table →
3 mL	10	100	5 units	table →
5 mL	6	60	8.3 units	table →

Same concentration, different vial

These pairs also come to 30 mg/mL, so their unit counts match this page exactly; only the number of draws per vial differs: 15 mg + 0.5 mL, 60 mg + 2 mL.

Try other numbers

30 mg + 1 mL questions

What concentration is 30 mg in 1 mL?

30 mg divided by 1 mL is 30 mg/mL, which is 30,000 mcg/mL. On a U-100 syringe each unit holds 0.01 mL, so one unit carries 300 mcg.

How many units is 500 mcg from a 30 mg vial with 1 mL?

500 mcg divided by 30,000 mcg/mL is 0.017 mL, which is 1.7 units on a U-100 syringe and 0.67 units on a U-40 syringe. The vial holds 60 draws of that size.

What if I add 1.5 mL instead of 1 mL to the 30 mg vial?

The mass stays 30 mg. With 1.5 mL the concentration is 20 mg/mL instead of 30 mg/mL, so the same amount per draw needs more units: 500 mcg becomes 2.5 units instead of 1.7.

Does a 30 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.

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