Biocode, Inc.

Xceleron, Limited

Ronald Colin Garner

Timothy G Wilkinson

Michael J Wraith

Erwin R Dorland

David J Phillips

Martin W Stow

Daniel Nichol Leong

Frank G Angella

Graham John Lappin

David W Britton

June Valerie Garner

Carl N Martin

The invention provides a calibrating method for use in a method of determining the quantity of an analyte labeled with an accelerator mass spectrometry (AMS) isotope in a test sample. The samples can include, for example, urine, faeces, plasma or blood. The analyte can be, for example, a drug or metabolite of a drug.

Quantification of analytes using accelerator mass spectrometry

The present invention provides a method of sample preparation for use in obtaining elemental isotope ratios of a material by accelerator mass spectrometry. The method comprises forming the material into a sample without any substantial chemical alteration of the material. The invention also provides a sample for use in obtaining elemental isotope ratios of a material.

Sample preparation method

In general, the invention features a method of marking a product for identification in which a marker, composed of a low molecular weight hapten covalently bound to a compound, is associated with the product. Where the marker is non-deleterious to the product, inert with respect to the product, and not already associated with the product. The invention also features hapten markers produced by covalently binding a hapten to a functional monomer and subsequently polymerizing the hapten-labeled monomer to form a hapten-labeled polymer.

Marking of products to establish identity and source

In general, the invention features a method of marking a product for identification in which a low molecular weight hapten is associated with the product as a marker, where the hapten is non-deleterious to the product, inert with respect to the product, and not already associated with the product.

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Sand Hutton, United Kingdom

Ronald Colin Garner