OBJECTIVE: An LC-MS/MS method for determination of Cotinine and Trans-3’-Hydroxycotinine in human serum was developed. Establish a methodology basis for studying tobacco exposure and health.METHOD: After protein precipitation with acetonitrile, the analytes and internal standard (I.S.), Cotinine-d3, were separated on a ZORBAX SB-Phenyl analytical column using the mobile phase of methanol (containing 0.3% formic acid) and water (containing 0.15% formic acid). Detection was carried out by electrospray positive ionization mass spectrometry in the multiple reaction monitoring (MRM) mode. RESULT: Cotinine , Trans-3’-Hydroxycotinine and I.S. were eluted at 2.56 min, 1.58min and 2.56 min, respectively. The calibration curves were linear and ranges for cotinine, trans-3’-Hydroxycotinine were respectively 0.05-500 ng·mL-1 and 0.50~1250 ng·mL-1. The lower limit of quantitation (LLOQ) was 0.05 ng·mL-1 for cotinine and 0.50 ng·mL-1 for trans-3’-Hydroxycotinine.Inter- and intra-day relative standard deviations were both less than 11%, and the relative errors were within ±7%. The mean extract recoveries were 98.54% (Cotinine)and 100.24% (trans-3’-Hydroxycotinine). CONCLUSION: It is a rapid, sensitive, selective and reliable method for the determination of cotinine and trans-3’-Hydroxycotinine in human serum in human serum. The cutoff value can be determined by measuring the content of cotinine in human serum, which provides a basis for distinguishing between smoking and non-smoking.
Published in | Asia-Pacific Journal of Health Science (Volume 1, Issue 1) |
Page(s) | 5-13 |
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This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
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Copyright © The Author(s), 2024. Published by Science Publishing Group |
Cotinine, Trans-3’-hydroxycotinine, Human Serum, LC-MS/MS, CUTOFF Value
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APA Style
Daguang Wang, Kehe Du, Lijun Shao, Shiqiao Ma, Xiaofeng Yang, et al. (2019). Determination of Cotinine and Trans-3’-Hydroxycotinine in Human Serum by LC-MS/MS and Its Application. Asia-Pacific Journal of Health Science, 1(1), 5-13.
ACS Style
Daguang Wang; Kehe Du; Lijun Shao; Shiqiao Ma; Xiaofeng Yang, et al. Determination of Cotinine and Trans-3’-Hydroxycotinine in Human Serum by LC-MS/MS and Its Application. Asia-Pac. J. Health Sci. 2019, 1(1), 5-13.
@article{10038384, author = {Daguang Wang and Kehe Du and Lijun Shao and Shiqiao Ma and Xiaofeng Yang and Tianyi Liu and Qian Liu and Meng Wang and Hongjun Liu and Yiqun Wu}, title = {Determination of Cotinine and Trans-3’-Hydroxycotinine in Human Serum by LC-MS/MS and Its Application}, journal = {Asia-Pacific Journal of Health Science}, volume = {1}, number = {1}, pages = {5-13}, url = {https://www.sciencepublishinggroup.com/article/10038384}, abstract = {OBJECTIVE: An LC-MS/MS method for determination of Cotinine and Trans-3’-Hydroxycotinine in human serum was developed. Establish a methodology basis for studying tobacco exposure and health.METHOD: After protein precipitation with acetonitrile, the analytes and internal standard (I.S.), Cotinine-d3, were separated on a ZORBAX SB-Phenyl analytical column using the mobile phase of methanol (containing 0.3% formic acid) and water (containing 0.15% formic acid). Detection was carried out by electrospray positive ionization mass spectrometry in the multiple reaction monitoring (MRM) mode. RESULT: Cotinine , Trans-3’-Hydroxycotinine and I.S. were eluted at 2.56 min, 1.58min and 2.56 min, respectively. The calibration curves were linear and ranges for cotinine, trans-3’-Hydroxycotinine were respectively 0.05-500 ng·mL-1 and 0.50~1250 ng·mL-1. The lower limit of quantitation (LLOQ) was 0.05 ng·mL-1 for cotinine and 0.50 ng·mL-1 for trans-3’-Hydroxycotinine.Inter- and intra-day relative standard deviations were both less than 11%, and the relative errors were within ±7%. The mean extract recoveries were 98.54% (Cotinine)and 100.24% (trans-3’-Hydroxycotinine). CONCLUSION: It is a rapid, sensitive, selective and reliable method for the determination of cotinine and trans-3’-Hydroxycotinine in human serum in human serum. The cutoff value can be determined by measuring the content of cotinine in human serum, which provides a basis for distinguishing between smoking and non-smoking.}, year = {2019} }
TY - JOUR T1 - Determination of Cotinine and Trans-3’-Hydroxycotinine in Human Serum by LC-MS/MS and Its Application AU - Daguang Wang AU - Kehe Du AU - Lijun Shao AU - Shiqiao Ma AU - Xiaofeng Yang AU - Tianyi Liu AU - Qian Liu AU - Meng Wang AU - Hongjun Liu AU - Yiqun Wu Y1 - 2019/04/30 PY - 2019 T2 - Asia-Pacific Journal of Health Science JF - Asia-Pacific Journal of Health Science JO - Asia-Pacific Journal of Health Science SP - 5 EP - 13 PB - Science Publishing Group UR - http://www.sciencepg.com/article/10038384 AB - OBJECTIVE: An LC-MS/MS method for determination of Cotinine and Trans-3’-Hydroxycotinine in human serum was developed. Establish a methodology basis for studying tobacco exposure and health.METHOD: After protein precipitation with acetonitrile, the analytes and internal standard (I.S.), Cotinine-d3, were separated on a ZORBAX SB-Phenyl analytical column using the mobile phase of methanol (containing 0.3% formic acid) and water (containing 0.15% formic acid). Detection was carried out by electrospray positive ionization mass spectrometry in the multiple reaction monitoring (MRM) mode. RESULT: Cotinine , Trans-3’-Hydroxycotinine and I.S. were eluted at 2.56 min, 1.58min and 2.56 min, respectively. The calibration curves were linear and ranges for cotinine, trans-3’-Hydroxycotinine were respectively 0.05-500 ng·mL-1 and 0.50~1250 ng·mL-1. The lower limit of quantitation (LLOQ) was 0.05 ng·mL-1 for cotinine and 0.50 ng·mL-1 for trans-3’-Hydroxycotinine.Inter- and intra-day relative standard deviations were both less than 11%, and the relative errors were within ±7%. The mean extract recoveries were 98.54% (Cotinine)and 100.24% (trans-3’-Hydroxycotinine). CONCLUSION: It is a rapid, sensitive, selective and reliable method for the determination of cotinine and trans-3’-Hydroxycotinine in human serum in human serum. The cutoff value can be determined by measuring the content of cotinine in human serum, which provides a basis for distinguishing between smoking and non-smoking. VL - 1 IS - 1 ER -