lL-37 calculator

5 mg in 2 mL = 2.5 mg/mL; 10 units on a U-100 syringe holds 0.25 mg.

Sizes on sale: 5mg. Choose a vial, the water and the amount per draw; prices are the lowest current US offers.

search a compound or a supplier’s vial

amount in the vial

bacteriostatic water added

amount per draw

syringe · picked to fit the draw

price, vial size and certificate correction

vial price (optional)

USD

Lowest current US offer for this size.

vial holds (optional)

Most 2–15 mg vials hold 3 mL.

measured content on the COA

From the lot certificate; it replaces the label amount.

or HPLC purity

Certificates on file for this compound:

Amino Club 5mg · lot LL0001 · 2026-08-19: 5.34 mg measured, 99.9% purityCOA

2.5 mg/mL

10 units holds 0.25 mg

concentration: 2.5 mg/mL
per unit: 25 mcg per unit
full draws per vial: —
cost per draw: —

the working

5 mg ÷ 2 mL = 2.5 mg/mL

If this is a prescription, the dose and volume on your pharmacy label take priority. Ask your pharmacist about any mismatch.

cheapest way to buy it

vendor	size	price	$/mg	checked	calculate with this vial, or view it
Amino USA	5mg	$80.00	$16.00	2026-11-06	view, LL-37 5mg at Amino USA, opens in a new tab
Cenexa Labs	5mg	$89.99	$18.00	2026-11-06	view, LL-37 5mg at Cenexa Labs, opens in a new tab

In-stock US offers checked in the last 7 days, before shipping. The featured partner is a paid placement and is labelled; order here is by price per mg.

updated Nov 4, 2026 · exact arithmetic, checked against 21 worked cases · prices from offers checked in the last 7 days

human trials · cited sources

doses of LL-37 used in research

Not approved; topical LL-37 was tested at 0.5-3.2 mg/mL twice weekly in a first-in-human and a 148-patient phase 2b venous leg ulcer trial, and by intratumoral injection (250-500 mcg per tumour weekly) in a 4-patient melanoma phase 1/2 study. These are the amounts specific labels and studies used, linked to each source. They are references, not recommendations; a prescription label takes priority.

Doses of LL-37 used in labels and published studies
source	who	amount and schedule	route
Phase 2b HEAL LL-37 (Wound Repair Regen 2021): 0.5 or 1.6 mg/mL topical phase 2 trial · 2021 · PMID 34687253	148 patients with hard-to-heal venous leg ulcers, 15 sites in Poland and Sweden, with compression therapy	0.5 other twice weekly 13 weeks Amount is a concentration in mg/mL; arms were 0.5 and 1.6 mg/mL, applied at 25 microlitres of solution per cm2 of ulcer after a 3-week placebo run-in. No significant healing benefit in the full population.	topical
First-in-human RCT (Wound Repair Regen 2014): 0.5, 1.6 or 3.2 mg/mL topical phase 1 trial · 2014 · PMID 25041740	34 patients with hard-to-heal venous leg ulcers, Sweden	0.5 other twice weekly 4 weeks Amount is a concentration in mg/mL; arms were 0.5, 1.6 and 3.2 mg/mL after a 3-week placebo run-in.	topical
Phase 1/2 (NCT02225366): intratumoral injection 250 or 500 mcg per tumour phase 1 trial · 2015 · NCT02225366	4 patients with melanoma (cutaneous/subcutaneous tumours), MD Anderson	250 mcg once weekly up to 8 weeks Route: intratumoral injection into 2-4 tumours. Cohort 1 received 250 mcg per tumour and cohort 2 500 mcg per tumour; results posted.	other

Sources checked Nov 4, 2026.

LL-37 5mg in 2 mL

amount to syringe units

LL-37 5 mg in 2 mL: amount to syringe units
amount	mL	U-100 units	U-40 units
100 mcg	0.04	4	1.6
250 mcg	0.1	10	4
500 mcg	0.2	20	8
1 mg	0.4	40	16
2 mg	0.8	80	32
2.5 mg	1	100	40
5 mg	2	200	80

One unit on a U-100 syringe is 0.01 mL; on a U-40 it is 0.025 mL.

every LL-37 vial size on sale

reconstitution chart

Concentration and amount per 10 units for LL-37 vial sizes and water volumes
vial	1 mL water	2 mL water	3 mL water	5 mL water
5 mg	5 mg/mL 10 units = 0.5 mg	2.5 mg/mL 10 units = 0.25 mg	1.667 mg/mL 10 units = 0.167 mg	1 mg/mL 10 units = 0.1 mg

10 units on a U-100 syringe is 0.1 mL. Every cell is exact arithmetic: amount ÷ water.

what the numbers mean · where they come from

terms and sources

Label amount or measured amount. The calculator starts from the amount printed on the vial. A lot certificate’s measured content (net peptide content, in mg) can replace it for the vial that was tested. HPLC purity is a share of peak area, not a mass, so a purity-only correction is shown as an estimate. See HPLC, certificate of analysis and how to read a peptide COA.
Concentration. Amount in the vial ÷ water added. Terms: reconstitution, bacteriostatic water, lyophilized.
Syringe units. A volume: 0.01 mL per unit on a U-100 syringe, 0.025 mL on U-40. Units say nothing about the compound until the concentration is known.
Cost per draw. Vial price × amount per draw ÷ vial amount, from the price per mg of a current offer. Offers come from the LL-37 price comparison; certificates from the COA library.

Arithmetic only, on the numbers entered. Amounts from labels or trials are cited references, not recommendations; PeptideTech does not give personal use instructions and does not test products.

short answers

LL-37 calculator questions

How much bacteriostatic water do I add to LL-37 5mg?

Any volume the vial holds; 2 mL gives 2.5 mg/mL, so 10 units on a U-100 syringe holds 250 mcg. More water makes each draw read more units. The table below shows 1–5 mL for every LL-37 vial size on sale.

What changes the calculated concentration?

Only two inputs: the amount of LL-37 in the vial and the water added. 5mg in 2 mL is 2.5 mg/mL; twice the water halves it, and the amount per draw then reads twice the units. A lot certificate's measured content replaces the label: Amino Club's 5mg lot LL0001 measured 5.34 mg, which in 2 mL is 2.67 mg/mL. HPLC purity is a share of peak area, not a measured mass, so it is shown only as an estimate.

What doses of LL-37 were used in research?

Not approved; topical LL-37 was tested at 0.5-3.2 mg/mL twice weekly in a first-in-human and a 148-patient phase 2b venous leg ulcer trial, and by intratumoral injection (250-500 mcg per tumour weekly) in a 4-patient melanoma phase 1/2 study. The table on this page lists 3 sources with amounts, schedules and links.

What does LL-37 cost per mg?

The lowest current US price is $80.00 for 5mg at Amino USA (about $16.00 per mg, checked 2026-11-06). The calculator turns any vial price into cost per draw.

How much LL-37 is really in the vial?

Lot certificates on file report measured content: for example Amino Club's 5mg lot LL0001 measured 5.34 mg at 99.9% purity. Use the certificate correction to calculate from the measured amount.

more calculators

Volume and concentration arithmetic for laboratory reconstitution; not medical advice. API: /api/calc. Syringe scales: 0.3 mL U-100, 0.5 mL U-100, 1 mL U-100, 0.5 mL U-40, 1 mL U-40, 1 mL syringe, 3 mL syringe.