# Quantification of theobromine and caffeine in saliva, plasma and urine via liquid chromatography–tandem mass spectrometry: A single analytical protocol applicable to cocoa intervention studies

**Type:** Papers  
**Canonical URL:** https://scholariq.org/papers/quantification-of-theobromine-and-caffeine-in-saliva-plasma-and-urine-via-liquid/

## Facts

| Field | Value |
| --- | --- |
| Author Names | Adam S. Ptolemy,Emma Tzioumis,Arjun Thomke,Sami W. Rifai,Mark D. Kellogg |
| Citations | 87 |
| DOI | 10.1016/j.jchromb.2009.12.019 |
| Fields | Biochemistry, Genetics and Molecular Biology,Medicine,Nursing |
| Open Access | false |
| OA Status | closed |
| OpenAlex ID | https://openalex.org/W2126922950 |
| PMID | 20045386 |
| Type | article |
| Year | 2009 |

## Paper authors

- [Mark D. Kellogg](https://scholariq.org/researchers/mark-d-kellogg/)

## Paper primary topic

- [Folate and B Vitamins Research](https://scholariq.org/topics/folate-and-b-vitamins-research/)

## Paper topics

- [Folate and B Vitamins Research](https://scholariq.org/topics/folate-and-b-vitamins-research/)
- [Metabolomics and Mass Spectrometry Studies](https://scholariq.org/topics/metabolomics-and-mass-spectrometry-studies/)
- [Biochemical Analysis and Sensing Techniques](https://scholariq.org/topics/biochemical-analysis-and-sensing-techniques/)

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Source: ScholarIQ — public research metadata, principally OpenAlex. See https://scholariq.org/sources/ for provenance and https://scholariq.org/methodology/ for what these figures mean.