Method: LC-MS/MS (Liquid Chromatography/Tandem Mass Spectrometry) with creatinine normalization by Jaffe Reaction (CLIA 17D0919496); not cleared or approved by the FDA. Results reported in µg/g creatinine. Not a stand-alone diagnosis; should be interpreted in clinical context.
A derived biomarker is a value that is calculated from other directly measured biomarkers rather than being measured directly in the lab.
Key benefits of Monobutyl phthalate (MBP) testing
- Di-n-butyl phthalate exposure tracking
- food packaging and adhesive chemical burden assessment
What is Monobutyl phthalate (MBP)?
MBP is a urinary metabolite of di-n-butyl phthalate (DBP) and related compounds - plasticizers used in adhesives, printing inks, nail polish, and food-contact materials. Measured via LC-MS/MS with creatinine normalization.
Why is Monobutyl phthalate (MBP) important?
DBP-type phthalates may contribute to hormonal disruption. MBP reflects exposure from food packaging, vinyl materials, and personal care products containing DBP - making it a useful marker of both dietary and product-related phthalate burden.
What insights will I get?
Your MBP level may reflect DBP-containing product exposure. Elevated results may indicate frequent contact with certain food packaging plastics or personal care items. Serial testing may show whether dietary and product changes affect your exposure profile.





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