Brand Profile
Li Changqing is a colorectal cancer early screening brand under Suzhou Linaxin Biotechnology Co., Ltd. Focusing on home-based health testing scenarios, Li Changqing provides consumers with intestinal health screening solutions.
Affiliated to Suzhou Linaxin Biotechnology Co., Ltd., Li Changqing is dedicated to the R&D of the 4th-generation solid-state nanopore gene detector and industrialization of early screening for high-incidence cancers. Supported by the company's biomedical research and development capabilities, Li Changqing delivers reliable product performance and enters the market via the LDT (Laboratory Developed Test) model. Together with the series brand Li Changsheng®, it forms a complete product portfolio for colorectal cancer early screening to realize differentiated market layout. Meanwhile, clinical studies and prospective cohort studies of Li Changqing have officially launched to continuously enrich supporting clinical data for the products.
Chinese Name: Li Changqing Affiliated Company: Suzhou Linaxin Biotechnology Co., Ltd
Trademark Registration Number: 63136137
Main Products
Intestinal Health Screening Product
Positioned as a convenient intestinal early screening tool, the product offers home-based testing solutions for people who fear colonoscopy examinations.

Brand Technology
Detection is realized by analyzing the methylation status of DNA shed from intestinal cells in stool samples:
Sample Type: Stool
Technical Route: Real-time fluorescent PCR technology, designed based on specific loci of Chinese population, matched with an automated sample processing system
Detection Target: Methylation levels of two colorectal cancer-related genes, SDC2 and NDRG4
Sensitivity: 92.9%
Applicable Crowd: People over 40 years old or those with long-term gastrointestinal discomfort
Screening Interval: Every 1 to 3 years
Brand Advantages
• Scenario Adaptability: No hospital visit required; complete the whole test by collecting samples at home and sending them for testing via express delivery;
• Technical & Formula Support: Adopts real-time fluorescent PCR technology designed for specific loci of Chinese population, paired with an automated sample processing system;
• Full-cycle Health Coverage: Focuses on early colorectal cancer screening, covering risk assessment for advanced adenomas (precancerous lesions) and early-stage colorectal cancer. It also connects subsequent clinical intervention and guarantee services to build a closed-loop full-cycle health management system of "Early Screening - Diagnosis - Intervention - Guarantee".
• Dual Guarantees: Misdiagnosis compensation guarantee + colonoscopy subsidy for positive results
Market Layout
As one of the core products under the medical biology division of Linaxin, Li Changqing generates synergistic effects together with Changle xin, Changweile and other products relying on the company's comprehensive sales system, enabling multi-channel layout covering chain pharmacies, clinics, physical examination centers, internet hospitals and other channels.
Good News! The H. pylori Self-test Product Under L...2026-06-18

Generals Li Dianren and Wang Aiguo Visit Linaxin f...2026-06-18

Domestic Solid-State Nanopore Sequencing Makes a B...2025-11-04

Solid-State Nanopore Technology Usheres in a Criti...2025-11-04

Li Changqing2025-11-04

WeChat service account