TB-500 price per mg
103 listings from 53 stores. Lowest $1.06/mg, median $5.70/mg: kits run $1.85/mg and single vials $8.99/mg at the median.
Sold as a synthetic form of thymosin beta-4, a naturally occurring protein. Vendors differ on whether the vial holds the full 43-amino-acid protein or a short active fragment, so check the listing. Fragment 17-23 products are listed separately and not compared here. Status as of September 2026. Also called Thymosin beta-4 fragment, TB4.
Best TB-500 prices from Finnrick-listed stores
Picks come only from Finnrick-listed stores with the item in stock; the table below has every listing. A lab score describes the purity and dose of past samples. It doesn't mean a product is safe or suitable for any use.
TB-500 listings, cheapest first
Score is Finnrick's score for TB-500 at that vendor, with the number of tests; "overall" means Finnrick has no TB-500 score there, so the vendor's overall score is shown. Not listed: Finnrick doesn't list the domain for the brand it uses. vs median: 0.50x is half the median price per mg. Likely listing error: far outside the normal range, or out of line with the store's own sizes. * The listing gives no vial count; counted as 10 because the store sells it as a kit or sells only 10-vial kits.
| # | Vendor | Score | Size | Pack | Price | Per vial | $/mg | vs median | Stock | Ships from | Listing |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | BiochemAPI | 73%overall | 5 mg | 10 vials | $53.00 | $5.30 | $1.06 | 0.19x | In stock | TB500 5mg inhouse test @99.19% | |
| 2 | apspeptide.com not Finnrick-listed | not listed | 10 mg | 10 vials | $110.00 | $11.00 | $1.10 | 0.19x | In stock | TB500-10mg 10 Vials | |
| 3 | Barn | 79%overall | 10 mg | 10 vials | $110.00 | $11.00 | $1.10 | 0.19x | In stock | US, CA and AU | TB10 10MG × 10 VIALS |
| 4 | Baohua Dongnuo (BHD) | 82%overall | 10 mg | 10 vials | $110.00 | $11.00 | $1.10 | 0.19x | In stock | China | TB10 TB500 10mg * 10 vials |
| 5 | BiochemAPI | 73%overall | 10 mg | 10 vials | $115.00 | $11.50 | $1.15 | 0.20x | In stock | TB500 10mg10vials | |
| 6 | Xianhong Tong XHT Peptides | 84%overall | 10 mg | 10 vials | $121.72 | $12.17 | $1.22 | 0.21x | In stock | China | TB500 10mg/vial (10VIALS) |
| 7 | Xianhong Tong XHT Peptides | 84%overall | 5 mg | 10 vials | $61.24 | $6.12 | $1.22 | 0.21x | In stock | China | TB500 5mg/vial (10VIALS) |
| 8 | Shanghai ERP Peptide | 41%6 tests | 10 mg | 10 vials | $129.00 | $12.90 | $1.29 | 0.23x | In stock | China | TB500 10mg*10vials (China warehouse) |
| 9 | Uther | 39%4 tests | 10 mg | 10 vials | $130.00 | $13.00 | $1.30 | 0.23x | In stock | China | TB-500 10mg (10 Vials / Kit) |
| 10 | Shanghai Wibson Biotechnology WBS | 73%overall | 10 mg | 10 vials | $130.00 | $13.00 | $1.30 | 0.23x | In stock | China | TB500 10mg*10vials (China warehouse) |
| 11 | Bfflist AMO | 72%overall | 10 mg | 10 vials | $135.00 | $13.50 | $1.35 | 0.24x | In stock | TB-500 (TB500) TB-10 10mg (kit of 10 via | |
| 12 | Shanghai ERP Peptide | 41%6 tests | 10 mg | 10 vials | $139.00 | $13.90 | $1.39 | 0.24x | In stock | US | TB500 10mg*10vials (warehouse A (Portlan |
| 13 | Shanghai Wibson Biotechnology WBS | 73%overall | 10 mg | 10 vials | $140.00 | $14.00 | $1.40 | 0.25x | In stock | US | TB500 10mg *10 vials (US warehouse 01) |
| 14 | SRY Labs | 36%8 tests | 20 mg | 10 vials | $285.00 | $28.50 | $1.43 | 0.25x | Out | TB-500(TB4) 20mg · kit of 10 vials | |
| 15 | Lipeptides | 34%4 tests | 10 mg | 10 vials | $145.00 | $14.50 | $1.45 | 0.25x | In stock | China | TB500 10mg*10vials |
| 16 | BiochemAPI | 73%overall | 2 mg | 10 vials | $30.00 | $3.00 | $1.50 | 0.26x | Out | TB500 2mg10vials | |
| 17 | Shanghai Wibson Biotechnology WBS | 73%overall | 5 mg | 10 vials | $75.00 | $7.50 | $1.50 | 0.26x | In stock | China | TB500 5mg*10vials (China warehouse) |
| 18 | Shanghai ERP Peptide | 41%6 tests | 5 mg | 10 vials | $79.00 | $7.90 | $1.58 | 0.28x | In stock | China | TB500 5mg*10vials (China warehouse) |
| 19 | Aavant Research | 85%overall | 10 mg | 10 vials | $160.00 | $16.00 | $1.60 | 0.28x | In stock | US | TB-500 10mg (kit of 10 vials) |
| 20 | Baohua Dongnuo (BHD) | 82%overall | 5 mg | 10 vials | $80.00 | $8.00 | $1.60 | 0.28x | In stock | China | TB5 TB500 5mg * 10 vials |
| 21 | Shanghai ERP Peptide | 41%6 tests | 5 mg | 10 vials | $84.00 | $8.40 | $1.68 | 0.29x | In stock | US | TB500 5mg*10vials (warehouse A (Portland |
| 22 | Shanghai Wibson Biotechnology WBS | 73%overall | 5 mg | 10 vials | $85.00 | $8.50 | $1.70 | 0.30x | In stock | China | TB500 5mg*10vials (China warehouse) |
| 23 | Lipeptides | 34%4 tests | 5 mg | 10 vials | $85.00 | $8.50 | $1.70 | 0.30x | In stock | China | TB500 5mg*10vials |
| 24 | hkpeptidesworldwide.com not Finnrick-listed | not listed | 5 mg | 10 vials | $89.00 | $8.90 | $1.78 | 0.31x | In stock | US | TB-500 5 mg Thymosin Beta Research Pepti |
| 25 | Aavant Research | 85%overall | 5 mg | 10 vials | $90.00 | $9.00 | $1.80 | 0.32x | In stock | US | TB-500 5mg (kit of 10 vials) |
| 26 | SRY Labs | 36%8 tests | 10 mg | 10 vials | $180.00 | $18.00 | $1.80 | 0.32x | Out | TB-500(TB4) 10mg · kit of 10 vials | |
| 27 | lilipeptides.com not Finnrick-listed | not listed | 10 mg | 10 vials | $183.00 | $18.30 | $1.83 | 0.32x | In stock | TB-500 (Thymosin Beta 4 Acetate) / 10mg* | |
| 28 | SaiyanMed | 75%overall | 10 mg | 10 vials | $184.00 | $18.40 | $1.84 | 0.32x | In stock | China and US warehouses | TB-500 (Thymosin Beta-4) / 10mg x 10 via |
| 29 | Mai Peptide | 67%overall | 10 mg | 10 vials | $185.00 | $18.50 | $1.85 | 0.32x | In stock | China | TB500 10mg*10vials |
| 30 | Bulk Peptide Wholesale | 70%overall | 10 mg | 10 vials | $200.00 | $20.00 | $2.00 | 0.35x | In stock | TB-500 10MG (10 vials) | |
| 31 | Bfflist AMO | 72%overall | 5 mg | 10 vials | $100.00 | $10.00 | $2.00 | 0.35x | In stock | TB-500 (TB500) TB-5 5mg (kit of 10 vials | |
| 32 | HkRoids | 60%overall | 10 mg | 10 vials* | $204.00 | $20.40 | $2.04 | 0.36x | In stock | US? | Buy 99.086% TB-500 10mg 1Kit Wholesale / |
| 33 | Chimera Peptides | 87%overall | 10 mg | 10 vials | $204.00 | $20.40 | $2.04 | 0.36x | In stock | TB500 (Thymosin Beta-4) / 10mg-x-10vials | |
| 34 | SaiyanMed | 75%overall | 5 mg | 10 vials | $103.00 | $10.30 | $2.06 | 0.36x | In stock | China and US warehouses | TB-500 (Thymosin Beta-4) / 5mg x 10 vial |
| 35 | lilipeptides.com not Finnrick-listed | not listed | 5 mg | 10 vials | $105.00 | $10.50 | $2.10 | 0.37x | In stock | TB-500 (Thymosin Beta 4 Acetate) / 5mg*1 | |
| 36 | Mai Peptide | 67%overall | 5 mg | 10 vials | $105.00 | $10.50 | $2.10 | 0.37x | In stock | China | TB500 5mg*10vials |
| 37 | SRY Labs | 36%8 tests | 5 mg | 10 vials | $105.00 | $10.50 | $2.10 | 0.37x | Out | TB-500(TB4) 5mg · kit of 10 vials | |
| 38 | HkRoids | 60%overall | 5 mg | 10 vials* | $110.00 | $11.00 | $2.20 | 0.39x | In stock | US? | Buy 99.086% TB-500 10mg 1Kit Wholesale / |
| 39 | HkRoids | 60%overall | 2 mg | 10 vials* | $50.00 | $5.00 | $2.50 | 0.44x | In stock | US? | Buy 99.086% TB-500 10mg 1Kit Wholesale / |
| 40 | Nexaph | 37%6 tests | 10 mg | 10 vials | $251.00 | $25.10 | $2.51 | 0.44x | In stock | US | TB4 10mg (10 vials/Kit) |
| 41 | Chimera Peptides | 87%overall | 5 mg | 10 vials | $130.00 | $13.00 | $2.60 | 0.46x | In stock | TB500 (Thymosin Beta-4) / 5mg-x-10vials | |
| 42 | Bulk Peptide Supply | 72%overall | 10 mg | 10 vials | $275.00 | $27.50 | $2.75 | 0.48x | In stock | US, OK 73120 | TB-500 10 mg (10 vials) |
| 43 | Kits4less | 84%overall | 10 mg | 10 vials | $300.00 | $30.00 | $3.00 | 0.53x | In stock | US | TB-500 100mg Kit |
| 44 | Coastal Peptides | 60%overall | 10 mg | 1 vial | $38.00 | $38.00 | $3.80 | 0.67x | In stock | US | TB-500 / 10MG |
| 45 | Swiss Chems | 48%overall | 10 mg | 1 vial | $42.36 | $42.36 | $4.24 | 0.74x | In stock | US | TB-500 (Thymosin Beta-4) / 10mg 1 vial |
| 46 | Swiss Chems | 48%overall | 10 mg | 10 vials | $426.30 | $42.63 | $4.26 | 0.75x | In stock | US | TB-500 (Thymosin Beta-4) / 10mg 10 vials |
| 47 | Kits4less | 84%overall | 10 mg | 1 vial | $45.00 | $45.00 | $4.50 | 0.79x | In stock | US | TB-500 10mg (Single Vial) |
| 48 | Chimera Peptides | 87%overall | 2 mg | 10 vials | $95.00 | $9.50 | $4.75 | 0.83x | In stock | TB500 (Thymosin Beta-4) / 2mg-x-10vials | |
| 49 | Royal Peptides | 75%overall | 10 mg | 10 vials | $485.00 | $48.50 | $4.85 | 0.85x | In stock | US, CA and EU warehouses | TB-500 10mg / kit-10-vials |
| 50 | Peptide Partners | 33%13 tests | 10 mg | 10 vials | $490.00 | $49.00 | $4.90 | 0.86x | In stock | TB-500 (TB4, 10mg vials) / 100-mg | |
| 51 | Orbitrex Peptides fake domains reported | 34%1 tests | 10 mg | 1 vial | $49.99 | $49.99 | $5.00 | 0.88x | In stock | US | TB-500 10mg |
| 52 | Oasis Peptides | 58%overall | 10 mg | 1 vial | $57.00 | $57.00 | $5.70 | 1.00x | In stock | US | TB-500 10mg |
| 53 | Peptide Partners | 33%13 tests | 10 mg | 5 vials | $290.00 | $58.00 | $5.80 | 1.02x | In stock | TB-500 (TB4, 10mg vials) / 50-mg | |
| 54 | purepeptides.com not Finnrick-listed | not listed | 5 mg | 1 vial | $30.00 | $30.00 | $6.00 | 1.05x | In stock | US | TB-500 5mg |
| 55 | purepeptides.com not Finnrick-listed | not listed | 10 mg | 1 vial | $60.00 | $60.00 | $6.00 | 1.05x | In stock | US | TB-500 10mg |
| 56 | Verified Peptides | 62%overall | 10 mg | 1 vial | $62.00 | $62.00 | $6.20 | 1.09x | In stock | US | Thymosin Beta-4 |
| 57 | Paramount Peptides | 65%overall | 20 mg | 1 vial | $125.00 | $125.00 | $6.25 | 1.10x | In stock | US | Thymosin Beta 4 (TB500) (20mg) |
| 58 | zhuoyuelab.com not Finnrick-listed | not listed | 10 mg | 10 vials | $648.00 | $64.80 | $6.48 | 1.14x | In stock | US | TB-500 / Thymosin B4 (10mg x 10 vials) |
| 59 | Elite Research USA | 59%overall | 10 mg | 1 vial | $64.99 | $64.99 | $6.50 | 1.14x | In stock | US | TB-500 Research Peptide - 10mg |
| 60 | tydespeptidesstore.com not Finnrick-listed | not listed | 10 mg | 1 vial | $65.00 | $65.00 | $6.50 | 1.14x | In stock | US | TB-500 (Thymosin Beta 4) 10 mg |
| 61 | Peptide Partners | 33%13 tests | 10 mg | 2 vials | $130.00 | $65.00 | $6.50 | 1.14x | In stock | TB-500 (TB4, 10mg vials) / 20-mg | |
| 62 | Paradigm Peptide fake domains reported | 85%overall | 10 mg | 1 vial | $65.00 | $65.00 | $6.50 | 1.14x | In stock | US | Tb-500 10mg |
| 63 | Paramount Peptides | 65%overall | 10 mg | 1 vial | $68.00 | $68.00 | $6.80 | 1.19x | In stock | US | Thymosin Beta 4 (TB500) (10mg) |
| 64 | zhuoyuelab.com not Finnrick-listed | not listed | 5 mg | 10 vials | $345.60 | $34.56 | $6.91 | 1.21x | In stock | US | TB-500 / Thymosin B4 (5mg x 10 vials) |
| 65 | Peptides For Sale | 44%overall | 5 mg | 1 vial | $34.99 | $34.99 | $7.00 | 1.23x | In stock | US: TN | Thymosin Beta 4 (TB500) 5mg |
| 66 | Royal Peptides | 75%overall | 10 mg | 1 vial | $70.00 | $70.00 | $7.00 | 1.23x | In stock | US, CA and EU warehouses | TB-500 10mg / single-vial |
| 67 | Swiss Chems | 48%overall | 5 mg | 1 vial | $35.16 | $35.16 | $7.03 | 1.23x | In stock | US | TB-500 (Thymosin Beta-4) / 5mg 1 vial |
| 68 | Swiss Chems | 48%overall | 5 mg | 10 vials | $351.60 | $35.16 | $7.03 | 1.23x | In stock | US | TB-500 (Thymosin Beta-4) / 5mg 10 vials |
| 69 | Nuscience Peptides | 61%overall | 10 mg | 1 vial | $74.99 | $74.99 | $7.50 | 1.32x | In stock | US | TB500 Peptide - Research-Grade Thymosin |
| 70 | PurePeptides | 66%overall | 10 mg | 1 vial | $75.00 | $75.00 | $7.50 | 1.32x | In stock | US | Thymosin Beta 4 10MG |
| 71 | aminoasylumofficial.com not Finnrick-listed | not listed | 5 mg | 1 vial | $39.99 | $39.99 | $8.00 | 1.40x | In stock | US | TB-500 5mg | Amino Asylum Research Pepti |
| 72 | Nuscience Peptides | 61%overall | 5 mg | 1 vial | $39.99 | $39.99 | $8.00 | 1.40x | In stock | US | TB500 Peptide - Research-Grade Thymosin |
| 73 | Pure Tested Peptides | 44%overall | 10 mg | 1 vial | $79.99 | $79.99 | $8.00 | 1.40x | In stock | US | TB 500 10mg Peptide TB-500 |
| 74 | Astro Peptides service complaints | 48%overall | 10 mg | 16 vials | $1,296 | $81.00 | $8.10 | 1.42x | In stock | US | TB-500 10 mg, 16-Pack (Bundle) |
| 75 | BioInfinity Lab | no score | 10 mg | 1 vial | $85.00 | $85.00 | $8.50 | 1.49x | In stock | US | TB-500 10 mg |
| 76 | Platinum Cryo | 63%overall | 5 mg | 1 vial | $44.95 | $44.95 | $8.99 | 1.58x | In stock | US | TB-500 / 5MG |
| 77 | Platinum Cryo | 63%overall | 10 mg | 1 vial | $89.95 | $89.95 | $8.99 | 1.58x | In stock | US | TB-500 / 10MG |
| 78 | Astro Peptides service complaints | 48%overall | 10 mg | 8 vials | $720.00 | $90.00 | $9.00 | 1.58x | In stock | US | TB-500 10 mg, 8-Pack (Bundle) |
| 79 | Astro Peptides service complaints | 48%overall | 5 mg | 16 vials | $720.00 | $45.00 | $9.00 | 1.58x | In stock | US | TB-500 5 mg, 16-Pack (Bundle) |
| 80 | Astro Peptides service complaints | 48%overall | 10 mg | 1 vial | $90.00 | $90.00 | $9.00 | 1.58x | In stock | US | TB500 5/10 mg / 10 mg |
| 81 | Suaway Lab Research | 67%overall | 10 mg | 1 vial | $90.08 | $90.08 | $9.01 | 1.58x | In stock | Luxembourg | THYMOSIN BETA-4 (43aa) - 10mg |
| 82 | Biolongevity Labs | 73%overall | 10 mg | 1 vial | $98.98 | $98.98 | $9.90 | 1.74x | In stock | US | TB-500 (10mg) |
| 83 | Astro Peptides service complaints | 48%overall | 5 mg | 8 vials | $400.00 | $50.00 | $10.00 | 1.75x | In stock | US | TB-500 5 mg, 8-Pack (Bundle) |
| 84 | Astro Peptides service complaints | 48%overall | 5 mg | 1 vial | $50.00 | $50.00 | $10.00 | 1.75x | In stock | US | TB500 5/10 mg / 5 mg |
| 85 | BioInfinity Lab | no score | 5 mg | 1 vial | $50.00 | $50.00 | $10.00 | 1.75x | In stock | US | TB-500 5 mg |
| 86 | zhuoyuelab.com not Finnrick-listed | not listed | 10 mg | 1 vial | $108.00 | $108.00 | $10.80 | 1.89x | In stock | US | TB-500 10mg |
| 87 | Accelerate Labs | 65%overall | 5 mg | 1 vial | $54.99 | $54.99 | $11.00 | 1.93x | In stock | US | TB-500 5MG |
| 88 | zhuoyuelab.com not Finnrick-listed | not listed | 5 mg | 1 vial | $57.60 | $57.60 | $11.52 | 2.02x | In stock | US | TB-500 5mg |
| 89 | Swiss Chems | 48%overall | 2 mg | 1 vial | $23.96 | $23.96 | $11.98 | 2.10x | In stock | US | TB-500 (Thymosin Beta-4) / 2mg 1 vial |
| 90 | Paramount Peptides | 65%overall | 5 mg | 1 vial | $60.00 | $60.00 | $12.00 | 2.11x | In stock | US | Thymosin Beta 4 (TB500) (5mg) |
| 91 | Swiss Chems | 48%overall | 2 mg | 10 vials | $269.55 | $26.96 | $13.48 | 2.36x | Out | US | TB-500 (Thymosin Beta-4) / 2mg 10 vials |
| 92 | Precision Peptide Co | 69%overall | 10 mg | 1 vial | $137.99 | $137.99 | $13.80 | 2.42x | In stock | US | Thymosin Beta 4 (TB-500) / 10mg |
| 93 | M-Peptides | 74%overall | 10 mg | 1 vial | $141.00 | $141.00 | $14.10 | 2.47x | In stock | Thymosin Beta 4 (TB500) 10mg | |
| 94 | Alpha-Gen | 61%overall | 5 mg | 1 vial | $72.00 | $72.00 | $14.40 | 2.53x | In stock | US | TB-500 5mg |
| 95 | NovaPeptide | 84%overall | 10 mg | 1 vial | $146.00 | $146.00 | $14.60 | 2.56x | In stock | Hong Kong or US logistics hubs | TB500 / 10mg |
| 96 | Seus Peptides | no score | 10 mg | 1 vial | $149.99 | $149.99 | $15.00 | 2.63x | Out | US | TB-500 10mg |
| 97 | Huaian Hanyou Peptide | 28%4 tests | 5 mg | 1 vial | $76.00 | $76.00 | $15.20 | 2.67x | In stock | China | TB-500 (Thymosin Beta 4) (5mg) |
| 98 | M-Peptides | 74%overall | 5 mg | 1 vial | $76.00 | $76.00 | $15.20 | 2.67x | In stock | Thymosin Beta 4 (TB500) 5mg | |
| 99 | NovaPeptide | 84%overall | 5 mg | 1 vial | $80.00 | $80.00 | $16.00 | 2.81x | In stock | Hong Kong or US logistics hubs | TB500 / 5mg |
| 100 | Seus Peptides | no score | 5 mg | 1 vial | $89.99 | $89.99 | $18.00 | 3.16x | Out | US | TB-500 5mg |
| 101 | Peptide Shop | no score | 2 mg | 1 vial | $44.47 | $44.47 | $22.24 | 3.90x | In stock | Russia | TB-500 2mg (peptide for tissue regenerat |
| 102 | Seus Peptides | no score | 2 mg | 1 vial | $49.99 | $49.99 | $25.00 | 4.39x | Out | US | TB-500 2mg |
| 103 | NovaPeptide | 84%overall | 2 mg | 1 vial | $50.00 | $50.00 | $25.00 | 4.39x | In stock | Hong Kong or US logistics hubs | TB500 / 2mg |
Showing each store's cheapest matching listing. Untick "Best per store" to see every size and pack.
Vendors with a Finnrick TB-500 score
| Vendor | TB-500 score | Tests | Overall | Listings here |
|---|---|---|---|---|
| Yiwu Aozuo | 51% | 6 | 73% | none |
| Pepturion (Yimei) | 46% | 7 | 72% | none |
| HK Peptides | 43% | 10 | 74% | none |
| HXNet | 43% | 5 | 72% | none |
| NuLife Peptides | 43% | 2 | 61% | none |
| Shanghai ERP Peptide | 41% | 6 | 73% | 4 |
| Peptide Crafters | 40% | 3 | 60% | none |
| Xian Yihang Technology | 39% | 4 | 66% | none |
| Uther | 39% | 4 | 65% | 1 |
| Zenith Jove (ZJ) | 39% | 4 | 69% | none |
| Shanxi Qianyecao (QYC) | 39% | 4 | 60% | none |
| Nexaph | 37% | 6 | 59% | 1 |
| Reta-Peptide | 37% | 13 | 67% | none |
| SRY Labs | 36% | 8 | 61% | 3 |
| ZLZ Peptide | 36% | 6 | 72% | none |
| Shanghai Sigma Audley (SSA) fake domains reported | 36% | 3 | 64% | none |
| Lipeptides | 34% | 4 | 69% | 2 |
| Orbitrex Peptides fake domains reported | 34% | 1 | 72% | 1 |
| Allen Biotechnology (ABC) | 34% | 4 | 64% | none |
| Peptide Partners | 33% | 13 | 67% | 3 |
| Shanghai Baoju | 33% | 4 | 67% | none |
| Oupeptide | 32% | 5 | 65% | none |
| Welon Peptide Solutions | 29% | 6 | 64% | none |
| Huaian Hanyou Peptide | 28% | 4 | 59% | 1 |
| TSC Top Supplements China | 27% | 5 | 67% | none |
From each vendor's Finnrick profile, fetched Sep 25, 2026. Scores with few tests are pulled toward the middle.
Related peptides
How these prices are calculated
Each price is the store's public list price on the day shown, divided by milligrams per vial times vials in the pack, converted to USD at ECB rates. Store feeds read Sep 25, 2026. 1,536 prices read from product pages, oldest Sep 25, 2026. Lab data fetched Sep 25, 2026. Full method. Spotted a wrong price or pack size? Report an error on this page.