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OpenSampling

2020 · Journal of separation science · paywalled

Multiplexed therapeutic drug monitoring of antipsychotics in dried plasma spots by LC-MS/MS

Ruggiero et al.

The finding, in our words

A multiplex LC-MS/MS method for dried plasma spots was fully validated for accuracy, precision, selectivity and sensitivity across seven antipsychotics, with limits of quantification ranging from 0.12 to 5.70 µg/L; this enables convenient therapeutic drug monitoring from a simple dried sample.

A paraphrase to the Library’s standard, never the abstract. The source is one link away and is always the authority.

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  1. 2026

    In AML and CLL, 91% of VAMS venetoclax results fell within 20% of plasma after individualised haematocrit correction; in home sampling, 18 of 21 patients self-sampled independently and 76% of returned samples were analysable, which shows home microsampling is workable, though the authors ask for multicentre validation.

    Clinical Validation of Venetoclax Volumetric Microsampling in Leukemia, with Whole-Blood-to-Plasma Conversion and Self-Microsampling FeasibilityLevens et al., Clinical Pharmacokinetics (paywalled) · source ↗

    • vams
    • venous-agreement
    • blood
    • dbs
    • tdm
    • self-collection
    • haematocrit
    • dried
    • oncology
    • capillary
    • validation
  2. 2026

    Guidance on capillary-to-plasma conversion: method- and analyte-specific clinical validation with paired capillary–venous samples before reporting plasma-equivalent results.

    To Convert or Not to Convert? Official IATDMCT Guideline on Converting Capillary-Blood Microsampling Concentrations to Plasma ConcentrationsBoffel et al., Therapeutic Drug Monitoring (paywalled) · source ↗

    • venous-agreement
    • blood
    • tdm
    • standards
    • dried
    • capillary
    • validation
  3. 2026

    In lung and renal transplant recipients, VAMS sampling with LC-MS/MS quantification of mycophenolic acid and tacrolimus showed good linearity and accuracy, and with a haematocrit-adjusted conversion formula achieved clinical agreement in most samples; tacrolimus did not require haematocrit correction. The approach is virtually painless and enables richer sampling for more accurate drug exposure estimates, supporting decentralised therapeutic drug monitoring.

    Evaluation of hematocrit-adjusted conversion strategies for mycophenolic acid and tacrolimus monitoring using volumetric absorptive microsampling in lung and renal transplant recipientsJuan et al., Journal of pharmacy & pharmaceutical sciences : a publication of the Canadian Society for Pharmaceutical Sciences, Societe canadienne des sciences pharmaceutiques · source ↗

    • blood
    • dried
    • vams
    • neoteryx-mitra
    • validation
    • venous-agreement
    • tdm
    • immunosuppressants
    • haematocrit
  4. 2026

    This review found that volumetric microsampling devices, such as Mitra, HemaPEN, HemaXis DB10, and Tasso-M20, overcome haematocrit bias, whilst Telimmune plasma separation cards enable direct plasma collection without centrifugation. These technologies support patient-centric, decentralised sampling, though the authors note that clinical validation remains limited across different drugs and patient populations.

    A Review of Blood-Based Microsampling Devices for Patient-Centered Application in Therapeutic Drug MonitoringHuhn & Scherf-Clavel, Therapeutic drug monitoring (paywalled) · source ↗

    • vams
    • volumetric
    • acceptability
    • neoteryx-mitra
    • blood
    • dbs
    • tdm
    • self-collection
    • haematocrit
    • dried
    • capillary
    • validation
  5. 2026

    This study found that volumetric absorptive microsampling shows satisfactory agreement with venous plasma for monitoring several antiseizure medications in paediatric patients. However, a blood-to-plasma conversion factor was required to estimate plasma concentrations for clobazam and carbamazepine metabolites due to poor capillary-to-plasma interchangeability.

    Volumetric Absorptive Microsampling (VAMS) for Therapeutic Drug Monitoring of Antiseizure Medications (ASMs) in Pediatric PatientsSimeoli et al., Pharmaceuticals (paywalled) · source ↗

    • blood
    • dried
    • vams
    • validation
    • venous-agreement
    • pediatric
    • tdm