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Validation and Cros...
Validation and Cross-Reactivity Data for Fentanyl Analogs With the Immunalysis Fentanyl ELISA
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- Guerrieri, Davide (författare)
- Linköpings universitet,Avdelningen för läkemedelsforskning,Medicinska fakulteten
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- Kjellqvist, Fanny (författare)
- Natl Board Forens Med, Dept Forens Genet and Forens Toxicol, Artillerigatan 12, SE-58758 Linkoping, Sweden
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- Kronstrand, Robert (författare)
- Linköpings universitet,Avdelningen för läkemedelsforskning,Medicinska fakulteten,Natl Board Forens Med, Dept Forens Genet and Forens Toxicol, Artillerigatan 12, SE-58758 Linkoping, Sweden
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- Green, Henrik (författare)
- Linköpings universitet,Avdelningen för läkemedelsforskning,Medicinska fakulteten,Natl Board Forens Med, Dept Forens Genet and Forens Toxicol, Artillerigatan 12, SE-58758 Linkoping, Sweden
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(creator_code:org_t)
- 2018-09-12
- 2019
- Engelska.
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Ingår i: Journal of Analytical Toxicology. - : OXFORD UNIV PRESS INC. - 0146-4760 .- 1945-2403. ; 43:1, s. 18-24
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Every year new fentanyl analog compounds, or fentanyls, appear on the drug scene. Development of immunoassays dedicated for screening individual molecules is challenging due to the short-lived presence of these compounds on the recreational drug market. Therefore, we investigated the detecting capabilities of the immunalysis fentanyl direct enzyme-linked immunosorbent assay (ELISA) kit against fentanyl in whole blood, and determined the cross-reactivity of nine fentanyl analogs (2-fluorofentanyl, acetylfentanyl, acrylfentanyl, carfentanil, cyclopropylfentanyl, tetrahydrofuranylfentanyl, furanylfentanyl, ocfentanil, valerylfentanyl) to confirm its validity for the general screening of fentanyls. Immunalysis ELISA assay was used to test whole blood samples fortified with fentanyl on a TECAN Freedom EVOlyzer platform, according to manufacturer specifications. The kit successfully was validated for fentanyl screening with a cutoff set at 0.5 ng/mL, and all tested analogs, with the exclusion of carfentanil, were detected. The lowest cross-reactivity with the kit was obtained with furanylfentanyl (20% +/- 1, 95% confidence intervals (CI)) and 4-fluoroisobutyrfentanyl (25% +/- 1, 95% CI), while the highest was recorded using acetylfentanyl (99% +/- 11, 95% CI) and acrylfentanyl (94% +/- 10, 95% CI). Post-mortem samples containing fentanyl, acrylfentanyl, cyclopropylfentanyl, THF-fentanyl and 4-fluoroisobutyrfentanyl were screened, and sensitivity and specificity of each analog were calculated. Positive screening results were generated by all post-mortem cases containing fentanyl (n = 14), acrylfentanyl (n = 11), cyclopropylfentanyl (n = 14), tetrahydrofuranylfentanyl (n = 13) and 4-fluoroisobutyrfentanyl (n = 10). Concentration of post-mortem fentanyl samples ranged from 0.5 ng/mL (cutoff) to 230 ng/mL, while the range for analogs was 3.4-36 ng/mL (cyclopentylfentanyl), 0.76-370 ng/mL (4-fluoroisobutyrfentanyl), 0.02-12 ng/mL (acrylfentanyl) and 2-26 ng/mL (tetrahydrofuranylfentanyl). The immunalysis fentanyl direct ELISA kit was successfully validated and showed significant cross-reactivity for all tested fentanyls, except carfentanil, making it a suitable technique for fentanyl and fentanyl analogs screening.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Farmakologi och toxikologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Pharmacology and Toxicology (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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