X-Zell
YC W15Singapore, SG · Founded 2014 · 19 employees · 3 known investors
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X-ZELL develops cryoimmunostaining platforms and multiplex panels for cytology laboratories, enabling extraction of multiple biomarkers from single tissue specimens while preserving samples for further testing. The company serves pathologists, oncologists, and diagnostic partners primarily in Southeast Asia with CE-marked, ISO 13485-certified reagents and workflow solutions.
Also known as X-Zell Biotec Co. Ltd.
Founders & leadership· Y Combinator alumni (W15)
X-Zell was founded in 2014 by Sebastian Punyaratabandhu Bhakdi and Prapat Suriyaphol.

Investors · 3
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corporate structureFrequently asked questions
- What does X-Zell do?
- X-ZELL develops cryoimmunostaining platforms and multiplex panels for cytology laboratories, enabling extraction of multiple biomarkers from single tissue specimens while preserving samples for further testing. The company serves pathologists, oncologists, and diagnostic partners primarily in Southeast Asia with CE-marked, ISO 13485-certified reagents and workflow solutions.
- Who founded X-Zell?
- X-Zell was founded by Sebastian Punyaratabandhu Bhakdi, Prapat Suriyaphol in 2014.
- Who are X-Zell's investors?
- X-Zell's investors include Y Combinator, Agrolimen Ventures, Venture Investment Associates.
- Where is X-Zell headquartered?
- X-Zell is headquartered in Singapore, SG.







