thymosin Alpha-1 calculator
10 mg in 2 mL = 5 mg/mL, so 1.6 mg is 0.32 mL = 32 units on a U-100 syringe.
Sizes on sale: 5mg, 10mg. Choose a vial, the water and the amount per draw; prices are the lowest current US offers.
price, vial size and certificate correction
Lowest current US offer for this size.
Most 2–15 mg vials hold 3 mL.
From the lot certificate; it replaces the label amount.
draw 32 units
0.32 mL on a 0.5 mL U-100 syringe
- concentration
- 5 mg/mL
- per unit
- 50 mcg per unit
- full draws per vial
- 6 + 0.4 mg
- cost per draw
- $9.60 · $6.00/mg
6 full draws, then 0.4 mg left (25% of a draw).
the working
- 10 mg ÷ 2 mL = 5 mg/mL
- 1.6 mg ÷ 5 mg/mL = 0.32 mL
- 0.32 mL × 100 = 32 units on a 0.5 mL U-100 syringe
- 10 mg ÷ 1.6 mg = 6.25 → 6 full draws
- $59.99 × 1.6 mg ÷ 10 mg = $9.60 per draw
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 · cost per draw of 1.6 mg
| vendor | size | price | $/mg | per draw | checked | calculate with this vial, or view it |
|---|---|---|---|---|---|---|
| LA Peptidesfeatured partnerCOA 10.15 mg | 10mg | $59.99 | $6.00 | $9.60 | 2026-11-03 | view, Thymosin Alpha-1 10mg at LA Peptides, opens in a new tab |
| Amino USA | 5mg | $60.00 | $12.00 | $19.20 | 2026-11-06 | view, Thymosin Alpha-1 5mg at Amino USA, opens in a new tab |
| American Peptides | 10mg | $125.00 | $12.50 | $20.00 | 2026-11-06 | view, Thymosin Alpha-1 10mg at American Peptides, opens in a new tab |
| Cenexa Labs | 10mg | $129.99 | $13.00 | $20.80 | 2026-11-06 | view, Thymosin Alpha-1 10mg 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.
approved outside the US · cited sources
doses of Thymosin Alpha-1 used in research
Thymalfasin (Zadaxin) is not FDA-approved but is licensed outside the US (e.g. Italy, AIC 028364026); the SciClone label gives 1.6 mg SC twice weekly for 6-12 months in chronic hepatitis B, and the 1,106-patient TESTS phase 3 sepsis trial used 1.6 mg SC every 12 hours for 7 days without a mortality benefit. These are the amounts specific labels and studies used, linked to each source. They are references, not recommendations; a prescription label takes priority.
| source | who | amount and schedule | route |
|---|---|---|---|
| Zadaxin prescribing information (SciClone): chronic hepatitis B, 1.6 mg SC twice weekly label outside the US | patients with chronic hepatitis B | 1.6 mg twice weekly 6 to 12 months Label states 1.6 mg (900 mcg/m2); patients under 40 kg receive 40 mcg/kg. Single-use vial holds 1.6 mg lyophilized thymalfasin reconstituted with 1.0 mL diluent (sterile water for injection) immediately before use; not for IV use. Source is RxList's reproduction of the SciClone label. | subcutaneous |
| Italian SmPC (AIC 028364026): influenza-vaccine adjuvant, one 1.6 mg vial twice weekly label outside the US · AIC 028364026 | immunocompromised adults receiving influenza vaccination | 1.6 mg twice weekly weeks 0-4 from first vaccination, repeated weeks 8-12 SmPC allows SC or IM injection and states a weekly dosage of 900 mcg/m2 with a height/weight table (1.32-1.87 mg). Not for paediatric use. Holder SciClone Pharmaceuticals Italy S.r.l.; text as reproduced by Torrinomedica. | subcutaneous |
| Phase 3 TESTS (BMJ 2025, NCT02867267): 1.6 mg SC every 12 h in sepsis phase 3 trial · 2025 · PMID 39814420 | 1,106 adults aged 18-85 with sepsis (Sepsis-3), 22 centres in China | 1.6 mg twice daily (every 12 hours) up to 7 days 1.6 mg dose per the NCT02867267 record (lyophilized powder reconstituted with 1 mL diluent). No difference in 28-day all-cause mortality vs placebo (23.4% vs 24.1%). | subcutaneous |
Sources checked Nov 4, 2026.
Thymosin Alpha-1 10mg in 2 mL
amount to syringe units
| amount | mL | U-100 units | U-40 units |
|---|---|---|---|
| 100 mcg | 0.02 | 2 | 0.8 |
| 250 mcg | 0.05 | 5 | 2 |
| 500 mcg | 0.1 | 10 | 4 |
| 1 mg | 0.2 | 20 | 8 |
| 2 mg | 0.4 | 40 | 16 |
| 2.5 mg | 0.5 | 50 | 20 |
| 5 mg | 1 | 100 | 40 |
One unit on a U-100 syringe is 0.01 mL; on a U-40 it is 0.025 mL.
every Thymosin Alpha-1 vial size on sale
reconstitution chart
| 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 mg | 10 mg/mL 10 units = 1 mg | 5 mg/mL 10 units = 0.5 mg | 3.333 mg/mL 10 units = 0.333 mg | 2 mg/mL 10 units = 0.2 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 Thymosin Alpha-1 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
Thymosin Alpha-1 calculator questions
How much bacteriostatic water do I add to Thymosin Alpha-1 10mg?
What changes the calculated concentration?
How many units is 1.6 mg of Thymosin Alpha-1?
What doses of Thymosin Alpha-1 were used in research?
What does Thymosin Alpha-1 cost per mg?
How much Thymosin Alpha-1 is really in the vial?
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