| P50 | author | Henrik Enghusen Poulsen | Q33310622 |
| P2093 | author name string | Allan Weimann | |
| | Mads Sabroe | |
| P2860 | cites work | Effect of allopurinol on caffeine disposition in man. | Q34447338 |
| | A simple test for acetylator phenotype using caffeine | Q42532035 |
| | The occurrence of substituted uric acids in human urine | Q42951528 |
| | Simultaneous Determination of Five Caffeine Metabolites in Human Urine with Reverse-Phase HPLC Method | Q58286503 |
| P4510 | describes a project that uses | high-performance liquid chromatography | Q381233 |
| P433 | issue | 3 | |
| P921 | main subject | high-performance liquid chromatography | Q381233 |
| | liquid chromatography-tandem mass spectrometry | Q117788892 |
| P304 | page(s) | 307-316 | |
| P577 | publication date | 2005-03-01 | |
| P1433 | published in | Journal of Mass Spectrometry | Q3014050 |
| P1476 | title | Measurement of caffeine and five of the major metabolites in urine by high-performance liquid chromatography/tandem mass spectrometry | |
| P478 | volume | 40 | |