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B+83PVS Score

Reliable — minor concerns

How we score →
Science.bio

Science.bio

Verified
Rank #14 USA Founded 2018 5-7 days shipping

Science.bio is a peptide research supplier verified by PepAssure. Score 83/100 across COA verification, purity testing, community sentiment, transparency, and order experience pillars.

Website (Pro/Enterprise)

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84
PVS Score
99.2%
Purity
82%
Sentiment
85
Consistency

Trust Analytics

Final PVS

84

Consistency

85

Stable

30d Trend

-1

Liquidity

5

13 alternatives

Pillar Scores

COA Verification (30%)84
Purity Testing (25%)86
Reddit Sentiment (20%)82
Transparency (15%)80
Order Experience (10%)83

Peer Ranking

Tirzepatide: #3/5MOTS-c: #1/4Thymosin Alpha-1: #1/4BPC-157: #14/21TB-500: #14/21Semaglutide: #14/21

Recent COAs73 total

Tirzepatide

TIR-2026-0400

HPLC + MS99.2%
MOTS-c

MOT-2026-0413

HPLC99.0%
Thymosin Alpha-1

THY-2026-0426

HPLC + MS98.8%

Community Reviews4.8 · 4

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4.8
4 reviews
5
3
4
1
3
0
2
0
1
0

Excellent purity

Verified
ResearcherA·Mar 5, 2026

Received my order in 3 days. The COA matched the product exactly and the peptide performed as expected in my assays.

Reliable vendor

LabUser42·Apr 9, 2026

Third order from them. Consistent quality across batches. Customer service is responsive to any questions about documentation.

Good quality, decent price

Verified
BioPhD·Mar 13, 2026

Purity was verified by independent HPLC. Slightly pricey compared to alternatives but the documentation quality justifies it.

MS data checks out

MSResearcher·Apr 17, 2026

Ran independent mass spec verification — the vendor's COA was accurate within 0.3 Da. Highly recommend for serious research.

Reddit Sentiment

Scraped < 1h ago
62%
positive

Searching for community feedback on this vendor...

r/r/Peptides
47
12
3d ago
Neutral

Reddit sentiment data will be live once the daily scraper activates.

r/r/PeptideScience
89
31
7d ago
Positive

Peptide Catalog

Score History

75
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81
83
83
84
86
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83
13 months agoToday

Testing Methods

HPLC

High-Performance Liquid Chromatography

MS

Mass Spectrometry

COA

Certificate of Analysis