2019 · Journal of chromatography. B, Analytical technologies in the biomedical and life sciences · paywalled
Development and validation of a volumetric absorptive microsampling assay for analysis of voriconazole and voriconazole N-oxide in human whole blood
Moorthy et al.
The finding, in our words
The VAMS assay quantifies voriconazole and voriconazole N-oxide with linear calibration from 10.0 to 10,000 ng/mL and intra- and inter-day accuracy within 87-102%, enabling accurate and precise therapeutic drug monitoring from a small fixed volume of dried blood.
A paraphrase to the Library’s standard, never the abstract. The source is one link away and is always the authority.
The study developed and validated a rapid LC-MS/MS method for quantifying cefazolin in capillary whole blood collected via VAMS, plasma, and plasma ultrafiltrate, showing robust performance across matrices and successful application in a pediatric pilot cohort for therapeutic drug monitoring.
Kocur et al., Clinica chimica acta; international journal of clinical chemistry (paywalled) · source ↗
This study validated a method for quantifying fluconazole using the Mitra device, demonstrating sufficient accuracy and precision for therapeutic drug monitoring in paediatric patients.
VAMS finger-prick sampling showed moderate agreement with conventional venous sampling for clofazimine, with a systematic 13% lower concentration that can be corrected, and was more cost-effective by about 4.45 USD per sample, supporting its use for routine therapeutic drug monitoring in MDR-TB.
Nugraha et al., Journal of chromatography. B, Analytical technologies in the biomedical and life sciences (paywalled) · source ↗
The authors validated a VAMS method for ivermectin therapeutic drug monitoring in whole blood, achieving a lower limit of quantification of 1 ng/mL and a linear range of 1–150 ng/mL. By eliminating haematocrit effects that limit dried blood spots, the method supports accurate decentralised sampling for antiparasitic therapy.
The study developed and validated LC-MS/MS methods for ganciclovir in serum, dried serum spots, and VAMS-Mitra devices. In 80 pediatric renal transplant recipients, VAMS showed interchangeability with serum samples while extending stability to at least 49 days at room temperature, making decentralised therapeutic drug monitoring more feasible for transplant patients.
Kocur et al., International journal of molecular sciences · source ↗