Import Bovine Tuberculosis Ab Test — Buy in Bulk from Supplier in China

The bovine tuberculosis antibody rapid test from Span Biotech, a Shenzhen-based supplier, is an in vitro veterinary diagnostic cassette designed for detecting antibodies against *Mycobacterium bovis* in cattle serum or plasma. The assay uses a lateral flow immunochromatographic format with visually interpreted bands: a control band (C) and a test band (T). Each kit includes test cassettes, assay buffer in centrifugal tubes (180 µl per tube), a graduated pipette, and a product manual. The procedure requires 20 µl of serum or plasma mixed with assay buffer, then three drops (approximately 100 µl) of the sample mixture applied to the cassette sample port. Results are read between five and ten minutes; results after ten minutes are invalid. The kit carries an 18-month shelf life from manufacture and is stable at room temperature between 2°C and 30°C.

The test cassette employs colloidal gold-conjugated reagents typical of veterinary rapid diagnostic devices, though the exact conjugate composition is not detailed in the source materials. The assay buffer formulation is proprietary to the manufacturer. Standard quality control for such veterinary immunoassays typically includes batch consistency testing, but the specific QC parameters (sensitivity, specificity, cross-reactivity panel) are not stated and should be requested from Span Biotech Ltd. directly. The source indicates the product is an in-house standard, suggesting internal validation rather than third-party certification. The kit is not intended as a sole diagnostic method; the manufacturer recommends confirmatory testing by ELISA or other reference methods for definitive diagnosis of bovine tuberculosis.

Target buyers include veterinary diagnostic laboratories, livestock health services, dairy and beef farming operations, and government animal health agencies conducting tuberculosis surveillance programs. The product is for veterinary use only and requires trained personnel for sample collection (whole blood via venipuncture) and serum or plasma preparation by centrifugation. The 20 µl sample volume is small, making the test suitable for field conditions where laboratory infrastructure is limited. Buyers should confirm lot-to-lot consistency, cross-reactivity data with non-tuberculous mycobacteria, and any regional regulatory approval status before import. Storage during transit must maintain the 2-30°C range; freezing or direct sunlight exposure will degrade reagent activity.

Span Biotech Ltd. operates from Unit 5, Building 3, Sunshine Aloha, Banxuegang Road, Longgang District, Shenzhen 518129, Guangdong Province, China. The supplier is classified as an imported-tier vendor with a harbor-level trust designation. The response rate is recorded at 0.00% with zero average response hours, indicating no historical buyer engagement data is available through the platform. This absence of response metrics should be factored into buyer communication planning; direct outreach via the provided address or alternative channels may be necessary.

The supplier profile does not disclose manufacturing certifications, ISO accreditation, GMP compliance, or veterinary product registration numbers. No information is provided about production capacity, batch sizes, quality management system, or domestic distribution network in China. Buyers should request documentation of manufacturing standards, lot release criteria, and any Chinese Ministry of Agriculture and Rural Affairs (MARA) veterinary product approvals. The in-house standard designation suggests internal quality benchmarks, but third-party validation or reference laboratory correlation studies are not mentioned and should be sought during due diligence.