Pubmed- Patient-led Remote IntraCapillary pharmacoKinetic Sampling (fingerPRICKS) for therapeutic drug monitoring in patients with inflammatory bowel - IBD Reporter Newsfeed - IBD Support Group Forums - IBDsupport.org

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Pubmed- Patient-led Remote IntraCapillary pharmacoKinetic Sampling (fingerPRICKS) for therapeutic drug monitoring in patients with inflammatory bowel


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Posted 22 July 2021 - 10:28 AM

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J Crohns Colitis. 2021 Jul 21:jjab128. doi: 10.1093/ecco-jcc/jjab128. Online ahead of print.

ABSTRACT

BACKGROUND & AIMS: Because of COVID-19 public health restrictions, telemedicine has replaced conventional outpatient follow up for most patients with chronic immune-mediated inflammatory disorders treated with biologic drugs. Innovative solutions to facilitate remote therapeutic drug monitoring are therefore required. Low-volume intracapillary blood sampling can be undertaken by patients at home and samples returned by post to central laboratories. We sought to report the effect of the COVID-19 pandemic on requests for therapeutic drug monitoring and the equivalence, acceptability and effectiveness of low volume Patient-led Remote IntraCapillary pharmacoKinetic Sampling (fingerPRICKS) compared to conventional venepuncture.

METHODS: We undertook a cross-sectional blood sampling methods comparison study and compared sample types using linear regression models. Drug and antidrug antibody levels were measured using standard ELISAs. Acceptability was assessed using a purpose-designed questionnaire.

RESULTS: Therapeutic drug monitoring requests for adalimumab (96.5 [70.5 - 106] per week to 52 [33.5 - 57.0], p < 0.001) but not infliximab (184.5 [161.2 - 214.2] to 161 [135 - 197.5], p = 0.34) reduced during the first UK stay-at-home lockdown compared with the preceding six months.Fingerprick sampling was equivalent to conventional venepuncture for adalimumab, infliximab, vedolizumab, and ustekinumab drug, and anti-adalimumab and -infliximab antibody levels. The median (IQR) volume of serum obtained using intracapillary sampling was 195ÁL (130-210). More than 87% (90/103) patients agreed that intracapillary testing was easy and 69% (71/103) preferred it to conventional venepuncture.In routine care, 75.3% (58/77) patients returned two blood samples within 14 days to permit remote assessment of biologic therapeutic drug monitoring.

CONCLUSIONS: Therapeutic drug monitoring can be undertaken using patient-led remote intracapillary blood sampling and has the potential to be a key adjunct to telemedicine in patients with immune-mediated inflammatory diseases.

PMID:34289028 | DOI:10.1093/ecco-jcc/jjab128


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