Matrix Search - Test Information
| Investigation | Faecal Reducing Substances | | Indications | No longer available. Test non specific as any diarrhoea may cause a positive result. To diagnose lactose intolerance/lactase deficiency withdraw lactose containing products for 2 weeks and re-assess symptoms followed by re-introduction of lactase to assess if symptoms re-occur | | Related tests | None | | HOW TO guides | None | | Information leaflets | None | | Publications | None | | Guidelines | None |
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