Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

Search Page

Filters

My NCBI Filters

Results by year

Table representation of search results timeline featuring number of search results per year.

Year Number of Results
2003 1
2008 1
2009 2
2010 2
2013 2
2014 1
2015 2
2017 3
2018 2
2019 1
2020 3
2021 1
2022 2
2023 2
2024 1

Text availability

Article attribute

Article type

Publication date

Search Results

25 results

Results by year

Filters applied: . Clear all
Page 1
Serum or Plasma for Quantification of Direct Oral Anticoagulants?
Aakerøy R, Stokes CL, Tomić M, Hegstad S, Kristoffersen AH, Ellekjær H, Schjøtt J, Spigset O, Helland A. Aakerøy R, et al. Among authors: hegstad s. Ther Drug Monit. 2022 Aug 1;44(4):578-584. doi: 10.1097/FTD.0000000000000956. Epub 2022 Jan 20. Ther Drug Monit. 2022. PMID: 35051972 Free PMC article.
Conductive vial electromembrane extraction of opioids from oral fluid.
Skaalvik TG, Zhou C, Øiestad EL, Hegstad S, Trones R, Pedersen-Bjergaard S. Skaalvik TG, et al. Among authors: hegstad s. Anal Bioanal Chem. 2023 Sep;415(22):5323-5335. doi: 10.1007/s00216-023-04807-3. Epub 2023 Jun 29. Anal Bioanal Chem. 2023. PMID: 37386201 Free PMC article.
[Determination of buprenorphine in urine].
Hegstad S, Christophersen AS, Khiabani HZ. Hegstad S, et al. Tidsskr Nor Laegeforen. 2008 Jan 17;128(2):184-5. Tidsskr Nor Laegeforen. 2008. PMID: 18202730 Free article. Norwegian.
Quantification of 21 antihypertensive drugs in serum using UHPLC-MS/MS.
Gundersen POM, Helland A, Spigset O, Hegstad S. Gundersen POM, et al. Among authors: hegstad s. J Chromatogr B Analyt Technol Biomed Life Sci. 2018 Jul 1;1089:84-93. doi: 10.1016/j.jchromb.2018.04.038. Epub 2018 Apr 28. J Chromatogr B Analyt Technol Biomed Life Sci. 2018. PMID: 29783197
[Drug testing in hair].
Hegstad S, Kristoffersen L, Christophersen AS, Khiabani HZ. Hegstad S, et al. Tidsskr Nor Laegeforen. 2009 Jan 1;129(1):36-8. doi: 10.4045/tidsskr.2009.0376. Tidsskr Nor Laegeforen. 2009. PMID: 19119295 Free article. Norwegian. No abstract available.
Retention in naltrexone implant treatment for opioid dependence.
Kunøe N, Lobmaier P, Vederhus JK, Hjerkinn B, Hegstad S, Gossop M, Kristensen O, Waal H. Kunøe N, et al. Among authors: hegstad s. Drug Alcohol Depend. 2010 Sep 1;111(1-2):166-9. doi: 10.1016/j.drugalcdep.2010.03.021. Epub 2010 May 31. Drug Alcohol Depend. 2010. PMID: 20570059
25 results