Research use only – not for human or animal consumption – 18+

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Research peptides · UK

Lab-verified research peptides for the UK.

Research peptide vial

Buy research-grade peptides built for the lab. Every peptide is third-party HPLC and mass-spec tested to ≥99% purity, with a Certificate of Analysis on every peptide — cold-chain delivered across the UK.

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≥99%
Tested purity
100%
3rd-party verified
UK
Express shipping

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Research Peptides

15% OFF KLOW

KLOW
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From £61.99 £72.93
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15% OFF Tirzepatide

Tirzepatide
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From £52.99 £62.34
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15% OFF GHK-Cu

GHK-Cu
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From £22.39 £26.34
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15% OFF Selank

Selank
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From £25.99 £30.58
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NAD+
≥99% Avg. Purity

Featured Research Peptide

NAD+

Nicotinamide adenine dinucleotide, a vital coenzyme involved in hundreds of metabolic reactions, studied for its role in aging, DNA repair, and cellular energy production.

£70.99 £83.52
Size
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For laboratory research use only. Not for human consumption.

Our Catalog

15% OFF Bacteriostatic Water

Bacteriostatic Water
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From £9.00 £10.59
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15% OFF Cagrilintide

Cagrilintide
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From £70.99 £83.52
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15% OFF DSIP

DSIP
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From £34.99 £41.17
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22% OFF Kisspeptin

Kisspeptin
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From £30.49 £38.87
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KPV
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15% OFF Retatrutide

Retatrutide
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From £75.49 £88.81
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Semaglutide
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15% OFF Thymosin Alpha-1

Thymosin Alpha-1
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Tested. Verified. Documented.

Purity is not a marketing word at Prox — it is a measured value. Every research peptide is screened by accredited third-party laboratories in the UK, and the full analysis is published.

≥99%
HPLC purity
100%
Peptides with COA

Independent labs

Analysed by accredited third-party laboratories — never self-reported.

≥99% purity

HPLC quantifies purity and mass-spectrometry confirms peptide identity.

Full traceability

Every peptide carries a unique identifier tied to its Certificate of Analysis.

Cold-chain delivery

Temperature-controlled, tracked dispatch across the UK.

Trusted by researchers across the UK

Independent, verified-buyer reviews from researchers purchasing peptides across the UK — the same lab-grade transparency we apply to every Certificate of Analysis.

5.0 Based on 1 reviews
5★ 1
4★ 0
3★ 0
2★ 0
1★ 0

Customers say about Pro Bio

Summary of recent reviews

Across 1 verified reviews, researchers most often praise Pro Bio for product quality, fast delivery and responsive service — a 5.0★ average, with 100% leaving five stars.

Quality Delivery Service Price Ordering Packaging

Review highlights

Batch Testing Results

Every batch is independently tested before release. Search any peptide or batch number, open its Certificate of Analysis, and verify it with the lab.

NAD+

111111 13/08/2026

Purity

99%

Net content

99

Heavy metals

Pass

Endotoxins

Pass

Sterility

Pass
View COA
IGF-1 LR3

SNTEK2026040119678 01/04/2026

Purity

99.3%

Net content

1mg

Heavy metals

Pass

Endotoxins

Pass

Sterility

Pass
Retatrutide

SNTEK202603245324 24/03/2026

Purity

99.1%

Net content

20.63mg

Heavy metals

Pass

Endotoxins

Pass

Sterility

Pass
MOTS-C

SNTEK202603245735 24/03/2026

Purity

99.1%

Net content

20.89mg

Heavy metals

Pass

Endotoxins

Pass

Sterility

Pass
Retatrutide

SNTEK202603241235 24/03/2026

Purity

99.1%

Net content

30.63mg

Heavy metals

Pass

Endotoxins

Pass

Sterility

Pass
Epitalon

SNTEK202603183022 18/03/2026

Purity

99.1%

Net content

10.53mg

Heavy metals

Pass

Endotoxins

Pass

Sterility

Pass
PT-141

SNTEK202603185045 18/03/2026

Purity

99.1%

Net content

10.53mg

Heavy metals

Pass

Endotoxins

Pass

Sterility

Pass
BPC-157

SNTEK2026031009508 10/03/2026

Purity

99.1%

Net content

10.86mg

Heavy metals

Pass

Endotoxins

Pass

Sterility

Pass
Ipamorelin

SNTEK2026031009533 10/03/2026

Purity

99.1%

Net content

10.35mg

Heavy metals

Pass

Endotoxins

Pass

Sterility

Pass
View All 22 Tests