Asanté™ Dried Blood Specimen Collection Strips

For the Collection, Preservation and Transport of a Defined Volume of Dried Blood Specimens with Low Binding and Retention Characteristics. 

Sedia's Asanté™ Dried Blood Specimen Collection Strips (Asanté™ Strips) are intended as an alternative to the traditional dried blood spot cards.  They are designed to collect and release a defined volume of blood specimen and facilitate preservation, identification, transport and storage of blood specimens.


Designed to overcome non-specific binding limitations of classical dried blood spot cards, special low retention absorbing material is used to hold the blood specimen which is dried, which in turn, readily releases proteins, enzymes, antibodies, DNA and other biomarkers.  Currently available in three sizes 60 mm² (equivalent to our former 3 mm strips), 100 mm² (formerly our 5 mm strips) and 200 mm² (formerly our 10 mm strips).  The size refers to the area of the absorbent blood pad on each strip.  We also sell Sample Packs customized to your needs to enable you to determine which strips work best for your application.  Our 60 mm² strips collect a quantity of blood approximately equivalent to a 6 mm or 0.25 in. diameter classical dried blood spot punch.  Note that paper punches should be calibrated to confirm punch diameter and the actual volume collected¹.  For a list of available products, refer to Ordering Information below.

Specimens can be collected directly from finger-stick blood samples or allowed to wick up from a tube of whole blood, serum or plasma.  (Latter method is shown in the diagrams below).  Note that clotted or partially clotted blood will adversely affect flow rate and may also not provide consistent volume uptakes due to clotted material.   Aged liquid blood collected with anticoagulant may also become partially clotted over time despite the presence of anticoagulant and may also perform differently.   For best performance, use either freshly collected venous blood or finger stick blood.

Asanté™ Dried Blood Specimen Collection Strips possess several advantages over classical dried blood spot cards:

    • Specimen can be readily collected from either a finger-stick or from a tube of whole blood, serum or plasma by wicking up the specimen from the end of the strip or touching the absorbent pad while the strip is laying horizontally.
    • Less blood specimen needs to be collected and "wasted".  At best, only about half of the blood spot on a classical dried blood spot card can be used due to the lost space between punches.  With the Asanté™ Strips you collect only the volume of blood specimen you need.  All of the blood collected is available to use as a specimen.   This results in a more pleasant patient experience since less blood is typically collected for an equivalent amount of usable specimen.
    • Freshly collected specimen can be dried more quickly than DBS paper collected specimens in most cases.  Asanté™ Strips in normal laboratory conditions dry in less than one hour (for 60 mm² and 100 mm² strips) or two hours (for 200 mm² strips) versus recommended drying of 4 hours for classical dried blood spot cards.
    • Unlike some dried blood spot cards used to collect DNA samples, Asanté™ Strips contain no hazardous chemicals.
    • No time-consuming, messy paper punching required with Asanté™ Strips.
    • Can more easily transfer Asanté™ Strips into and out of elution tubes.  Asanté™  Strips can be handled with gloved hands. No forceps needed.
    • No need for decontamination of tools between sample collection.  Paper punches and forceps used to punch out and handle specimens from classical dried blood cards are not required so no decontamination of these instruments as recommended between different specimens¹ applies.  
    • Sample ID linkage maintained from specimen collection to elution buffer.  No sample mixups as may potentially happen with unlabeled dried blood spots.
    • Consistent uptake and release of most blood proteins, DNA, biomarkers and other components from Asanté™ Strips due to low binding characteristic of absorbent material in Asanté™ Strips vs. cellulosic medium of classical dried blood spots.
    • Sample volumes collected can be fixed using different size Asanté™ Strips. (Customized sizes available as well; contact our Customer Service Department for details).
       

Ideal Alternative to Classical Dried Blood Spot Cards for High Throughput Sampling and Testing

Asanté™ Dried Blood Specimen Collection Strips facilitate high throughput sampling and testing, overcoming many of the shortcomings of classical dried blood spot cards.  The diagram below shows how the Asanté™ Strips can be used when collecting specimens that must later be tested in a microtiter plate (such as the 8 x 12 or 96-well array typically used for ELISA's).

To see the above protocol sheet in full size, download it here or from the Product Downloads list at upper right.

Ordering Information

Asanté™ Dried Blood Specimen Collection Strips are available in 3 different sizes of strips (sizes refer to surface area of absorbent blood pad):

    • 60 mm² strips (each strip absorbs approximately 16 μl of blood; approximately equivalent to a 6 mm or 0.25 in. diameter dried blood spot)
    • 100 mm² strips (each strip absorbs approximately 27 μl of blood).
    • 200 mm² wide strips (each strip absorbs approximately 54 ul of blood).
    • For customized widths, contact our Customer Service Department

  •  Catalog Number
     Width
     Quantity per Pack
    1818
    Sample Pack
    Contact Customer Service 
         
    1819-100
     60 mm² (5 x 12 mm)
    100 Strips
     
    1820-100
     100 mm² (5 x 20 mm)
    100 Strips
     
    1821-100

    Accessories: 

     200 mm² (10 x 20 mm)

    100 Strips

     
    1822-100

    1825-025

     Dried Blood Specimen Strip Shipping Cards

    Biohazard Bags, Ziplock, 4 x 6 in.

     100 Cards

    25 Bags

       
    (Up to 6 dried Asanté™ Strips can be attached to each card which can be further labeled or notated for specimen identity. Card can then be folded up and archived or transported to laboratory for analysis.)

    For Research Use Only.  Not For Use In Diagnostic Procedures.

    For information about our other specimen collection devices, click here
    _____________________________________________________________
    ¹Clinical and Laboratory Standards Institute (CLSI). 2013.  Blood Collection on Filter Paper for Newborn Screening Programs; Approved Standard—Sixth Edition. CLSI document NBS01-A6. Clinical and Laboratory Standards Institute, Wayne, PA USA.
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