Capitainer®B Vanadate- A Better Sampling Standard For PEth Testing
Volumetric, solves the problem with traditional DBS
Enables easier sampling via finger blood
Enables accurate testing of Phosphatidylethanol (PEth)
Shipping and storage of the sample in ambient temperature
Eliminates the risk of post sampling PEth formation
A New Standard for PEth Analysis
Capitainer®B Vanadate is the only volumetric microsampling device scientifically shown to enable accurate PEth testing without risk of post sampling formation . Microsampling with fingerblood enables alcohol testing without need for phlebotomy.
1) Beck, O., Mellring, M., Löwbeer, C. et al. Measurement of the alcohol biomarker phosphatidylethanol (PEth) in dried blood spots and venous blood—importance of inhibition of post-sampling formation from ethanol.
Learn more about the qDBS technology behind the next generation dried blood spot sampling cards for PEth analysis.
About PEth testing
PEth is a direct biomarker for alcohol consumption and is only produced in the presence of ethanol. This is in contrast to for example GGT (Gamma glutamyl transpeptidase) an indirector marker of alcohol use as a marker for liver inflammation that can be caused by dozens of drugs and also infections. PEth (phosphatidylethanol) is found in red blood cells and is an abnormal phospholipid that is formed in the presence of ethanol. It is formed via a transphosphatidylation reaction of phospholipase D (PLD). PEth accumulates with frequent alcohol consumption with a half-life of approximately 4 days. Therefore, PEth is a biomarker for long term alcohol use.
In blood that contains ethanol at sampling, PEth may continue to form after sampling . This may lead to falsely elevated PEth concentrations. This is a well described phenomenon in venous blood samples were storage temperature and shipping conditions need to be controlled in order to limitit In Vitro formation. However, the formation of PEth can be stopped through inhibiting the PLD activity. Sodium metavanadate (NaVO3) is an effective PLD inhibitor.
We recommend reading the full publication of Beck et al.  for more details regarding the advantages with Capitainer®B Vanadate in PEth analysis.
- Beck, O., Mellring, M., Löwbeer, C. et al. Measurement of the alcohol biomarker phosphatidylethanol (PEth) in dried blood spots and venous blood—importance of inhibition of post-sampling formation from ethanol. Anal Bioanal Chem 413, 5601–5606 (2021). https://doi.org/10.1007/s00216-021-03211-z
- Schröck A, Henzi A, Bütikofer P, König S, Weinmann W. Determination of the formation rate of phosphatidylethanol by phospholipase D (PLD) in blood and test of two selective PLD inhibitors. Alcohol. 2018 Dec;73:1-7. https://doi.org/10.1016/j.alcohol.2018.03.003
Order Capitainer®B Vanadate Now
50 pcs box
Product code: 210-0052
Dimensions: 78 x 43 x 3 mm
Sample volume: 2 x 10 µl
DBS paper: Ahlstrom grade 222
>80% of the device is paper based
<1,2 grams of plastics per device
Better than 0.5 μl as one Standard
Deviation (SD), (CV <5%)
Rate of over- or under-sampling
(with a deviation >3 SD) <0.1%
Temperature range: +15°C to +35°C
Relative humidity range: 15% to 90%
Hematocrit value: 25% to 55%
The card must be used within 30 minutes from opening the package
Collected Capitainer B Vanadate samples can be stored at room temperature.
The stability of individual analytes in DBS samples should be validated by the responsible laboratory. In general, stability increases with lower temperature and lower humidity. Capitainer B Vanadate discs can be stored in the freezer to extend stability. Please refer to the extensive literature for traditional DBS samples as guidance for individual analytes.
Dispose according to local regulations. Take care with blood stained materials and sharps.
Capitainer®B Vanadate is CE-marked, registered as an IVD product according to the IVD Regulation (EU) 2017/746 and registered with the US FDA as a Device Class 1.
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