Question 1

What is the peptide reconstitution formula?

Accepted Answer

Concentration (mg/mL) = mg of peptide ÷ mL of bacteriostatic water. Then the units to draw on a U-100 syringe scale = (target amount in mg ÷ concentration in mg per mL) × 100. Example: 10 mg of peptide in 2 mL of BAC water is 5 mg/mL; a 250 mcg (0.25 mg) target is 0.25 ÷ 5 = 0.05 mL = 5 units.

Question 2

Is this a peptide dosage calculator?

Accepted Answer

No. It runs reconstitution and syringe-unit math for laboratory research: the concentration (mg/mL) of a mixed vial and the equivalent units on a U-100 syringe scale. It does not recommend how much of any compound to use, for a person or an animal. If you searched 'dosage calculator,' the reconstitution math above is almost certainly what you need: turning a vial size and a water volume into a concentration and a syringe mark.

Question 3

How much bacteriostatic water do I add to a peptide vial?

Accepted Answer

There is no single fixed amount: the volume you add sets the concentration, so pick a volume that makes your draw easy to measure. Common choices: 2 mL into a 5 mg vial gives 2.5 mg/mL, and 2 mL into a 10 mg vial gives 5 mg/mL. More water means a lower concentration and more units per draw (easier to measure but a fuller syringe); less water means a higher concentration and fewer units. Use the calculator above to test any combination.

Question 4

How do I read units on a U-100 syringe scale for peptides?

Accepted Answer

A standard U-100 syringe scale is marked in units where 100 units = 1 mL, so 1 unit = 0.01 mL. To find your draw, multiply your volume per draw in mL by 100. For example, 0.05 mL = 5 units, and 0.10 mL = 10 units. The 'units' and 'IU' markings on the barrel refer to the same lines; 1 cc = 1 mL exactly.

Question 5

How long does reconstituted peptide last, and how should it be stored?

Accepted Answer

Once mixed with bacteriostatic water, most peptides are stable for about 28 days when refrigerated at 2-8°C (36-46°F) and kept out of light. The 0.9% benzyl alcohol in BAC water acts as a preservative. Do not freeze a reconstituted vial, and discard it if the solution turns cloudy or discolored. Lyophilized (un-mixed) peptide powder keeps far longer: months to years frozen at -20°C. Check the supplier's sheet for the specific compound.

Question 6

Can I reuse the same peptide vial for multiple draws?

Accepted Answer

Yes, that is the point of bacteriostatic water. The benzyl alcohol preservative makes the vial multi-use, so you can take repeated draws over roughly 28 days refrigerated. Wipe the rubber stopper with a fresh alcohol swab before every draw, use a new sterile needle each time, and never return drawn solution to the vial. If you reconstitute with plain sterile water instead, the vial has no preservative and should be treated as single-use within 24 hours.

Question 7

What syringe is best for small peptide draws?

Accepted Answer

For most research draws, a U-100 (1 mL) syringe is marked directly in units (100 units = 1 mL), so the units you calculate read straight off the barrel scale, with no mL conversion. For very small draws (under 5 units), a 0.3 mL (30-unit) syringe has more widely spaced markings, so the line is easier to read. If a single draw would exceed 100 units, reconstitute with less water to raise the concentration so it fits on one barrel, or split it into smaller draws.

Peptide	Vial	Solvent	Amount	Syringe
BPC-157	10 mg	2 mL BAC	500 mcg	10.0 units
TB-500	10 mg	2 mL BAC	3000 mcg	60.0 units
BPC/TB Blend	20 mg	2 mL BAC	500 mcg	5.0 units
GHK-Cu	50 mg	3 mL BAC	2000 mcg	12.0 units
KPV	10 mg	2 mL BAC	500 mcg	10.0 units
Thymosin α1	10 mg	2 mL BAC	1500 mcg	30.0 units
Glow Blend	70 mg	3 mL BAC	1670 mcg	7.2 units
KLOW Blend	80 mg	3 mL BAC	1670 mcg	6.3 units

Peptide	Vial	Solvent	Amount	Syringe
Semaglutide	30 mg	3 mL BAC	500 mcg	5.0 units
Tirzepatide	60 mg	6 mL BAC	2500 mcg	25.0 units
Retatrutide	10 mg	3 mL BAC	1000 mcg	30.0 units
Cagrilintide	10 mg	2 mL BAC	250 mcg	5.0 units
Tesamorelin	10 mg	2 mL BAC	1000 mcg	20.0 units
MOTS-c	10 mg	2 mL BAC	1000 mcg	20.0 units
5-Amino-1MQ	10 mg	2 mL BAC	1000 mcg	20.0 units
AOD-9604	5 mg	2 mL BAC	300 mcg	12.0 units

Peptide	Vial	Solvent	Amount	Syringe
CJC/Ipa Blend	10 mg	2 mL BAC	250 mcg	5.0 units
Ipamorelin	5 mg	2 mL BAC	250 mcg	10.0 units
Sermorelin	5 mg	2 mL BAC	250 mcg	10.0 units
GHRP-2	5 mg	2 mL BAC	200 mcg	8.0 units
GHRP-6	5 mg	2 mL BAC	200 mcg	8.0 units
Hexarelin	2 mg	2 mL BAC	150 mcg	15.0 units
IGF-1 LR3acetic acid	1 mg	1 mL (acetic acid)	100 mcg	10.0 units
HGH Frag 176-191	5 mg	2 mL BAC	350 mcg	14.0 units

Peptide	Vial	Solvent	Amount	Syringe
Semax	30 mg	3 mL BAC	1000 mcg	10.0 units
Selank	30 mg	3 mL BAC	1000 mcg	10.0 units
Oxytocin	5 mg	2 mL BAC	50 mcg	2.0 units
DSIP	5 mg	2 mL BAC	200 mcg	8.0 units
Kisspeptin-10	5 mg	2 mL BAC	75 mcg	3.0 units

Peptide	Vial	Solvent	Amount	Syringe
NAD+	500 mg	5 mL BAC	75000 mcg	75.0 units
Epithalon	10 mg	2 mL BAC	7500 mcg	150.0 units
LL-37	5 mg	2 mL BAC	175 mcg	7.0 units

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Peptide	Vial	Solvent	Amount	Syringe
PT-141	10 mg	2 mL BAC	500 mcg	10.0 units
Melanotan 2	10 mg	2 mL BAC	250 mcg	5.0 units