Vendor comparison
LabFirst Peptides vs Peptide Science Now
LabFirst Peptides is cheaper per mg on 26 of the 42 peptides they share; Peptide Science Now on 15, the same price on 1.
Across all 42, LabFirst Peptides’s price per mg is a median 24% lower than Peptide Science Now’s.
- Listings on the index
- 58
- Cheaper per mg on
- 26 of 42 shared
- Certificates of analysis on file
- none yet
- Ships from
- United States
- Latest price check
- 6 Nov 2026
- Listings on the index
- 69
- Cheaper per mg on
- 15 of 42 shared
- Certificates of analysis on file
- none yet
- Ships from
- United States
- Latest price check
- 30 Oct 2026
Retail 42
Purchases of fewer than 10 vials.
- Adipotide
LabFirst Peptides
$10.50/mg
10 mg · $105.00
checked 6 Nov 2026
Peptide Science Now
$8.90/mg
10 mg · $89.00
checked 30 Oct 2026
Peptide Science Now 15% cheaper
- AICAR
LabFirst Peptides
$1.20/mg
50 mg · $60.00
checked 6 Nov 2026
Peptide Science Now
$1.00/mg
50 mg · $50.00
checked 30 Oct 2026
Peptide Science Now 17% cheaper
- AOD-9604
LabFirst Peptides
$7.50/mg
10 mg · $75.00
checked 6 Nov 2026
Peptide Science Now
$10.83/mg
6 mg · $65.00
checked 30 Oct 2026
LabFirst Peptides 31% cheaper
- ARA-290
LabFirst Peptides
$7.00/mg
10 mg · $70.00
checked 6 Nov 2026
Peptide Science Now
$4.69/mg
16 mg · $75.00
checked 30 Oct 2026
Peptide Science Now 33% cheaper
- BPC-157
LabFirst Peptides
$5.90/mg
10 mg · $59.00
checked 6 Nov 2026
Peptide Science Now
$9.33/mg
15 mg · $140.00
checked 30 Oct 2026
LabFirst Peptides 37% cheaper
- Bronchogen
LabFirst Peptides
$4.00/mg
20 mg · $80.00
checked 6 Nov 2026
Peptide Science Now
$3.00/mg
20 mg · $60.00
checked 30 Oct 2026
Peptide Science Now 25% cheaper
- Cagrilintide
LabFirst Peptides
$8.50/mg
10 mg · $85.00
checked 6 Nov 2026
Peptide Science Now
$14.50/mg
10 mg · $145.00
checked 30 Oct 2026
LabFirst Peptides 41% cheaper
- Cardiogen
LabFirst Peptides
$4.25/mg
20 mg · $85.00
checked 6 Nov 2026
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Peptide Science Now 24% cheaper
- Cartalax
LabFirst Peptides
$4.25/mg
20 mg · $85.00
checked 6 Nov 2026
Peptide Science Now
$3.00/mg
20 mg · $60.00
checked 30 Oct 2026
Peptide Science Now 29% cheaper
- CJC-1295 NO DAC
LabFirst Peptides
$6.80/mg
5 mg · $34.00
checked 6 Nov 2026
Peptide Science Now
$9.90/mg
5 mg · $49.50
checked 30 Oct 2026
LabFirst Peptides 31% cheaper
- Cortagen
LabFirst Peptides
$4.25/mg
20 mg · $85.00
checked 6 Nov 2026
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Peptide Science Now 24% cheaper
- DSIP
LabFirst Peptides
$5.40/mg
10 mg · $54.00
checked 6 Nov 2026
Peptide Science Now
$10.00/mg
5 mg · $50.00
checked 30 Oct 2026
LabFirst Peptides 46% cheaper
- Epithalon
LabFirst Peptides
$2.18/mg
50 mg · $109.00
checked 6 Nov 2026
Peptide Science Now
$3.80/mg
50 mg · $190.00
checked 30 Oct 2026
LabFirst Peptides 43% cheaper
- FOXO4-DRI
LabFirst Peptides
$17.50/mg
10 mg · $175.00
checked 6 Nov 2026
Peptide Science Now
$25.00/mg
10 mg · $250.00
checked 30 Oct 2026
LabFirst Peptides 30% cheaper
- GHK-Cu
LabFirst Peptides
$0.590/mg
100 mg · $59.00
checked 6 Nov 2026
Peptide Science Now
$1.40/mg
50 mg · $70.00
checked 30 Oct 2026
LabFirst Peptides 58% cheaper
- GHRP-2
LabFirst Peptides
$5.33/mg
15 mg · $80.00
checked 6 Nov 2026
Peptide Science Now
$5.00/mg
10 mg · $50.00
checked 30 Oct 2026
Peptide Science Now 6% cheaper
- GHRP-6
LabFirst Peptides
$7.50/mg
10 mg · $75.00
checked 6 Nov 2026
Peptide Science Now
$5.00/mg
10 mg · $50.00
checked 30 Oct 2026
Peptide Science Now 33% cheaper
- Glutathione
LabFirst Peptides
$0.037/mg
1500 mg · $55.00
checked 6 Nov 2026
Peptide Science Now
$0.142/mg
600 mg · $85.00
checked 30 Oct 2026
LabFirst Peptides 74% cheaper
- Gonadorelin
LabFirst Peptides
$27.50/mg
2 mg · $55.00
checked 6 Nov 2026
Peptide Science Now
$8.50/mg
10 mg · $85.00
checked 30 Oct 2026
Peptide Science Now 69% cheaper
- IGF-1 LR3
LabFirst Peptides
$95.00/mg
1 mg · $95.00
checked 6 Nov 2026
Peptide Science Now
$110.00/mg
1 mg · $110.00
checked 30 Oct 2026
LabFirst Peptides 14% cheaper
- Ipamorelin
LabFirst Peptides
$6.50/mg
10 mg · $65.00
checked 6 Nov 2026
Peptide Science Now
$8.00/mg
10 mg · $80.00
checked 30 Oct 2026
LabFirst Peptides 19% cheaper
- Kisspeptin
LabFirst Peptides
$8.50/mg
10 mg · $85.00
checked 6 Nov 2026
Peptide Science Now
$13.00/mg
5 mg · $65.00
checked 30 Oct 2026
LabFirst Peptides 35% cheaper
- KPV
LabFirst Peptides
$4.90/mg
10 mg · $49.00
checked 6 Nov 2026
Peptide Science Now
$11.00/mg
5 mg · $55.00
checked 30 Oct 2026
LabFirst Peptides 55% cheaper
- LL-37
LabFirst Peptides
$30.00/mg
5 mg · $150.00
checked 6 Nov 2026
Peptide Science Now
$19.00/mg
5 mg · $95.00
checked 30 Oct 2026
Peptide Science Now 37% cheaper
- Melanotan 1
LabFirst Peptides
$4.00/mg
10 mg · $40.00
checked 6 Nov 2026
Peptide Science Now
$5.50/mg
10 mg · $55.00
checked 30 Oct 2026
LabFirst Peptides 27% cheaper
- MOTS-C
LabFirst Peptides
$2.50/mg
40 mg · $100.00
checked 6 Nov 2026
Peptide Science Now
$11.00/mg
10 mg · $110.00
checked 30 Oct 2026
LabFirst Peptides 77% cheaper
- NAD+
LabFirst Peptides
$0.110/mg
1000 mg · $110.00
checked 6 Nov 2026
Peptide Science Now
$0.400/mg
750 mg · $300.00
checked 30 Oct 2026
LabFirst Peptides 73% cheaper
- Oxytocin
LabFirst Peptides
$4.50/mg
10 mg · $45.00
checked 6 Nov 2026
Peptide Science Now
$6.50/mg
10 mg · $65.00
checked 30 Oct 2026
LabFirst Peptides 31% cheaper
- P21
LabFirst Peptides
$19.00/mg
5 mg · $95.00
checked 6 Nov 2026
Peptide Science Now
$24.00/mg
5 mg · $120.00
checked 30 Oct 2026
LabFirst Peptides 21% cheaper
- PEG-MGF
LabFirst Peptides
$40.00/mg
2 mg · $80.00
checked 6 Nov 2026
Peptide Science Now
$19.00/mg
5 mg · $95.00
checked 30 Oct 2026
Peptide Science Now 53% cheaper
- Pinealon
LabFirst Peptides
$4.25/mg
20 mg · $85.00
checked 6 Nov 2026
Peptide Science Now
$3.75/mg
20 mg · $75.00
checked 30 Oct 2026
Peptide Science Now 12% cheaper
- Retatrutide
LabFirst Peptides
$3.57/mg
60 mg · $214.00
checked 6 Nov 2026
Peptide Science Now
$15.83/mg
12 mg · $190.00
checked 30 Oct 2026
LabFirst Peptides 77% cheaper
- Selank
LabFirst Peptides
$2.63/mg
30 mg · $79.00
checked 6 Nov 2026
Peptide Science Now
$5.50/mg
10 mg · $55.00
checked 30 Oct 2026
LabFirst Peptides 52% cheaper
- Semaglutide
LabFirst Peptides
$3.83/mg
30 mg · $115.00
checked 6 Nov 2026
Peptide Science Now
$22.50/mg
10 mg · $225.00
checked 30 Oct 2026
LabFirst Peptides 83% cheaper
- Semax
LabFirst Peptides
$2.30/mg
30 mg · $69.00
checked 6 Nov 2026
Peptide Science Now
$2.50/mg
30 mg · $75.00
checked 30 Oct 2026
LabFirst Peptides 8% cheaper
- Sermorelin
LabFirst Peptides
$7.50/mg
10 mg · $75.00
checked 6 Nov 2026
Peptide Science Now
$8.33/mg
15 mg · $125.00
checked 30 Oct 2026
LabFirst Peptides 10% cheaper
- SS-31
LabFirst Peptides
$4.18/mg
50 mg · $209.00
checked 6 Nov 2026
Peptide Science Now
$6.00/mg
25 mg · $150.00
checked 30 Oct 2026
LabFirst Peptides 30% cheaper
- TB-500
LabFirst Peptides
$7.50/mg
10 mg · $75.00
checked 6 Nov 2026
Peptide Science Now
$13.50/mg
10 mg · $135.00
checked 30 Oct 2026
LabFirst Peptides 44% cheaper
- Thymosin Alpha-1
LabFirst Peptides
$13.00/mg
10 mg · $130.00
checked 6 Nov 2026
Peptide Science Now
$13.00/mg
10 mg · $130.00
checked 30 Oct 2026
Same price
- Tirzepatide
LabFirst Peptides
$3.83/mg
60 mg · $230.00
checked 6 Nov 2026
Peptide Science Now
$16.33/mg
15 mg · $245.00
checked 30 Oct 2026
LabFirst Peptides 77% cheaper
- Vesugen
LabFirst Peptides
$6.00/mg
10 mg · $60.00
checked 6 Nov 2026
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Peptide Science Now 46% cheaper
- VIP
LabFirst Peptides
$13.00/mg
5 mg · $65.00
checked 6 Nov 2026
Peptide Science Now
$12.50/mg
6 mg · $75.00
checked 30 Oct 2026
Peptide Science Now 4% cheaper
| Peptide | LabFirst Peptides | Peptide Science Now | Difference per mg |
|---|---|---|---|
| Adipotide | $10.50/mg 10 mg · $105.00 checked 6 Nov 2026 | $8.90/mg 10 mg · $89.00 checked 30 Oct 2026 | Peptide Science Now 15% cheaper |
| AICAR | $1.20/mg 50 mg · $60.00 checked 6 Nov 2026 | $1.00/mg 50 mg · $50.00 checked 30 Oct 2026 | Peptide Science Now 17% cheaper |
| AOD-9604 | $7.50/mg 10 mg · $75.00 checked 6 Nov 2026 | $10.83/mg 6 mg · $65.00 checked 30 Oct 2026 | LabFirst Peptides 31% cheaper |
| ARA-290 | $7.00/mg 10 mg · $70.00 checked 6 Nov 2026 | $4.69/mg 16 mg · $75.00 checked 30 Oct 2026 | Peptide Science Now 33% cheaper |
| BPC-157 | $5.90/mg 10 mg · $59.00 checked 6 Nov 2026 | $9.33/mg 15 mg · $140.00 checked 30 Oct 2026 | LabFirst Peptides 37% cheaper |
| Bronchogen | $4.00/mg 20 mg · $80.00 checked 6 Nov 2026 | $3.00/mg 20 mg · $60.00 checked 30 Oct 2026 | Peptide Science Now 25% cheaper |
| Cagrilintide | $8.50/mg 10 mg · $85.00 checked 6 Nov 2026 | $14.50/mg 10 mg · $145.00 checked 30 Oct 2026 | LabFirst Peptides 41% cheaper |
| Cardiogen | $4.25/mg 20 mg · $85.00 checked 6 Nov 2026 | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | Peptide Science Now 24% cheaper |
| Cartalax | $4.25/mg 20 mg · $85.00 checked 6 Nov 2026 | $3.00/mg 20 mg · $60.00 checked 30 Oct 2026 | Peptide Science Now 29% cheaper |
| CJC-1295 NO DAC | $6.80/mg 5 mg · $34.00 checked 6 Nov 2026 | $9.90/mg 5 mg · $49.50 checked 30 Oct 2026 | LabFirst Peptides 31% cheaper |
| Cortagen | $4.25/mg 20 mg · $85.00 checked 6 Nov 2026 | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | Peptide Science Now 24% cheaper |
| DSIP | $5.40/mg 10 mg · $54.00 checked 6 Nov 2026 | $10.00/mg 5 mg · $50.00 checked 30 Oct 2026 | LabFirst Peptides 46% cheaper |
| Epithalon | $2.18/mg 50 mg · $109.00 checked 6 Nov 2026 | $3.80/mg 50 mg · $190.00 checked 30 Oct 2026 | LabFirst Peptides 43% cheaper |
| FOXO4-DRI | $17.50/mg 10 mg · $175.00 checked 6 Nov 2026 | $25.00/mg 10 mg · $250.00 checked 30 Oct 2026 | LabFirst Peptides 30% cheaper |
| GHK-Cu | $0.590/mg 100 mg · $59.00 checked 6 Nov 2026 | $1.40/mg 50 mg · $70.00 checked 30 Oct 2026 | LabFirst Peptides 58% cheaper |
| GHRP-2 | $5.33/mg 15 mg · $80.00 checked 6 Nov 2026 | $5.00/mg 10 mg · $50.00 checked 30 Oct 2026 | Peptide Science Now 6% cheaper |
| GHRP-6 | $7.50/mg 10 mg · $75.00 checked 6 Nov 2026 | $5.00/mg 10 mg · $50.00 checked 30 Oct 2026 | Peptide Science Now 33% cheaper |
| Glutathione | $0.037/mg 1500 mg · $55.00 checked 6 Nov 2026 | $0.142/mg 600 mg · $85.00 checked 30 Oct 2026 | LabFirst Peptides 74% cheaper |
| Gonadorelin | $27.50/mg 2 mg · $55.00 checked 6 Nov 2026 | $8.50/mg 10 mg · $85.00 checked 30 Oct 2026 | Peptide Science Now 69% cheaper |
| IGF-1 LR3 | $95.00/mg 1 mg · $95.00 checked 6 Nov 2026 | $110.00/mg 1 mg · $110.00 checked 30 Oct 2026 | LabFirst Peptides 14% cheaper |
| Ipamorelin | $6.50/mg 10 mg · $65.00 checked 6 Nov 2026 | $8.00/mg 10 mg · $80.00 checked 30 Oct 2026 | LabFirst Peptides 19% cheaper |
| Kisspeptin | $8.50/mg 10 mg · $85.00 checked 6 Nov 2026 | $13.00/mg 5 mg · $65.00 checked 30 Oct 2026 | LabFirst Peptides 35% cheaper |
| KPV | $4.90/mg 10 mg · $49.00 checked 6 Nov 2026 | $11.00/mg 5 mg · $55.00 checked 30 Oct 2026 | LabFirst Peptides 55% cheaper |
| LL-37 | $30.00/mg 5 mg · $150.00 checked 6 Nov 2026 | $19.00/mg 5 mg · $95.00 checked 30 Oct 2026 | Peptide Science Now 37% cheaper |
| Melanotan 1 | $4.00/mg 10 mg · $40.00 checked 6 Nov 2026 | $5.50/mg 10 mg · $55.00 checked 30 Oct 2026 | LabFirst Peptides 27% cheaper |
| MOTS-C | $2.50/mg 40 mg · $100.00 checked 6 Nov 2026 | $11.00/mg 10 mg · $110.00 checked 30 Oct 2026 | LabFirst Peptides 77% cheaper |
| NAD+ | $0.110/mg 1000 mg · $110.00 checked 6 Nov 2026 | $0.400/mg 750 mg · $300.00 checked 30 Oct 2026 | LabFirst Peptides 73% cheaper |
| Oxytocin | $4.50/mg 10 mg · $45.00 checked 6 Nov 2026 | $6.50/mg 10 mg · $65.00 checked 30 Oct 2026 | LabFirst Peptides 31% cheaper |
| P21 | $19.00/mg 5 mg · $95.00 checked 6 Nov 2026 | $24.00/mg 5 mg · $120.00 checked 30 Oct 2026 | LabFirst Peptides 21% cheaper |
| PEG-MGF | $40.00/mg 2 mg · $80.00 checked 6 Nov 2026 | $19.00/mg 5 mg · $95.00 checked 30 Oct 2026 | Peptide Science Now 53% cheaper |
| Pinealon | $4.25/mg 20 mg · $85.00 checked 6 Nov 2026 | $3.75/mg 20 mg · $75.00 checked 30 Oct 2026 | Peptide Science Now 12% cheaper |
| Retatrutide | $3.57/mg 60 mg · $214.00 checked 6 Nov 2026 | $15.83/mg 12 mg · $190.00 checked 30 Oct 2026 | LabFirst Peptides 77% cheaper |
| Selank | $2.63/mg 30 mg · $79.00 checked 6 Nov 2026 | $5.50/mg 10 mg · $55.00 checked 30 Oct 2026 | LabFirst Peptides 52% cheaper |
| Semaglutide | $3.83/mg 30 mg · $115.00 checked 6 Nov 2026 | $22.50/mg 10 mg · $225.00 checked 30 Oct 2026 | LabFirst Peptides 83% cheaper |
| Semax | $2.30/mg 30 mg · $69.00 checked 6 Nov 2026 | $2.50/mg 30 mg · $75.00 checked 30 Oct 2026 | LabFirst Peptides 8% cheaper |
| Sermorelin | $7.50/mg 10 mg · $75.00 checked 6 Nov 2026 | $8.33/mg 15 mg · $125.00 checked 30 Oct 2026 | LabFirst Peptides 10% cheaper |
| SS-31 | $4.18/mg 50 mg · $209.00 checked 6 Nov 2026 | $6.00/mg 25 mg · $150.00 checked 30 Oct 2026 | LabFirst Peptides 30% cheaper |
| TB-500 | $7.50/mg 10 mg · $75.00 checked 6 Nov 2026 | $13.50/mg 10 mg · $135.00 checked 30 Oct 2026 | LabFirst Peptides 44% cheaper |
| Thymosin Alpha-1 | $13.00/mg 10 mg · $130.00 checked 6 Nov 2026 | $13.00/mg 10 mg · $130.00 checked 30 Oct 2026 | Same price |
| Tirzepatide | $3.83/mg 60 mg · $230.00 checked 6 Nov 2026 | $16.33/mg 15 mg · $245.00 checked 30 Oct 2026 | LabFirst Peptides 77% cheaper |
| Vesugen | $6.00/mg 10 mg · $60.00 checked 6 Nov 2026 | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | Peptide Science Now 46% cheaper |
| VIP | $13.00/mg 5 mg · $65.00 checked 6 Nov 2026 | $12.50/mg 6 mg · $75.00 checked 30 Oct 2026 | Peptide Science Now 4% cheaper |
Only at LabFirst Peptides: 16 peptides in the same market
Only at Peptide Science Now: 27 peptides in the same market
- B7-33
- Chonluten
- Follistatin-315
- Follistatin-344
- GHK Basic
- GHRH
- Hexarelin
- hGH Fragment 176-191
- Humanin
- Livagen
- MGF
- N-Acetyl Epithalon Amidate
- N-Acetyl Selank Amidate
- N-Acetyl Semax Amidate
- Pancragen
- PNC-27
- Prostamax
- TB-500 Fragment
- Testagen
- Thymalin
- Thymogen
- Triptorelin
- Vesilute
- Vilon
- Melanotan 2(Bulk)
- PT-141(Bulk)
- Tesamorelin(Bulk)
LabFirst Peptides compared with
- Lab Ratz Research54 shared
- Peptides direct to you53 shared
- Huaian Hanyou Peptide51 shared
- Peptides GG50 shared
- Vipris Biotechnology49 shared
- NHOV47 shared
- VPeptide47 shared
- Catalyst Peptides46 shared
- Research1peptides46 shared
- Luxe Peptides45 shared
- Pure Lab Peptides45 shared
- Eppixlabs44 shared
- Raw Amino44 shared
- Core Peptides43 shared
- Grey Axis Research43 shared
- Bridge Research42 shared
- Prime Longevity Peptides42 shared
- Alpha Peptides41 shared
- Amino Usa41 shared
- Priority Peptides41 shared
- Biotech Peptides40 shared
- Grey Matters Research40 shared
- OP Labs40 shared
- SQS Research40 shared
- TrueLab Peptides40 shared
- Cenexa Labs39 shared
- Peptide Science Store39 shared
- Eros Peptides38 shared
- Nexus Bio Life38 shared
- Nordsci Peptides38 shared
Peptide Science Now compared with
- Peptide Science Store63 shared
- Huaian Hanyou Peptide58 shared
- Peptides direct to you58 shared
- Nordsci Peptides57 shared
- Lab Ratz Research53 shared
- Peptides GG53 shared
- Core Peptides52 shared
- Raw Amino52 shared
- Luxe Peptides51 shared
- NHOV51 shared
- Vipris Biotechnology51 shared
- Amino Usa49 shared
- VPeptide49 shared
- Nexus Bio Life47 shared
- Prime Longevity Peptides45 shared
- Priority Peptides45 shared
- Research1peptides45 shared
- TrueLab Peptides43 shared
- Biotech Peptides42 shared
- Cenexa Labs42 shared
- OP Labs42 shared
- Pure Lab Peptides42 shared
- Grey Axis Research41 shared
- Grey Matters Research41 shared
- Catalyst Peptides40 shared
- Eppixlabs40 shared
- Eros Peptides40 shared
- Alpha Peptides39 shared
- Bridge Research37 shared
- SQS Research33 shared
Two listings are compared only when they are the same peptide in the same market, so a 10-vial kit is never set against a single vial. Price per mg is our arithmetic on the listed price, for comparison; the amount you pay is the listed price for the size shown, so check it on the vendor’s own page before you buy. What price per mg means.
No vendor can pay to change a price or the order of anything on this page. Some outbound links are affiliate links.