KNOW ABOUT DRIED BLOOD SPOT(DBS)
DRIED BLOOD SPOT
a)difinition of DBS;-is a whole
blood collected on a filter paper and dried which allows for easier
transportation of the specimen.
b)Requirements during prepairing DBS
1)Blood
collection cards(filter paper)-is a paper like that are used in collecting
blood.
2)Sealable plastic bags-is a plastic bag used to store or collect all
the requirement that are used in DBS.
3)Glycine weighing paper-it stands between DBS cards for
transporting/prevent coss contamination.
4)Desiccant packs-when transporting from one place to another it helps
to remove the excess moisture.
5)Humidity cards-is a card on which a moisture sensitive chemical is
impreginated that can change colour.also help to maintain moisture during
transportation.
6)Sharp containers-used for deposing the sharp instuments after work.
7)Alcohol swab-used to clean the finger before pricking and after
pricking.
C)Important tips for drying DBS.
1)Avoiding touching or smearing the blood
spots becouse it may lead to exploding of diseases in case the child has any
diseases.
2)it
must dry completely before packagein order to be in safe order.
3)heat
is not allowed during drying process becouse it will deteriorate DBS.
4)It
must be away from direct sunlight becouse the light can give negative results.
5)allow
the specimen to fully air dry horizontally as it is adviced.
D)How to pack DBS storage after drying is
complete.
1)appropriately
stock DBS
-Glycine weighing paper must be placed on DBS to pevent cross
contamination.
2)insert
into sealable plastic bags
-Bags which are big in size must be avoided becouse cards will be
shuffling inside.
3)Desiccant
packets shouold be added
-Desiccant save the drying agent,some need more or fewer depending on
environment and storage conditions.
4)HUmidity
cards.
-humidity cards must be recharged before use and if a drying oven is not
available,cards and excessivenumber of desiccant must be placed.
E)How to pack DBS for shipping.
1-Insert
bundled DBS into rip resistant envelope.
2-appropriate documantation with shipment must be included.
3-both
into brown envelope and seal for shipping must be inserted
F)How to store DBS
1-it is acceptable to store DBS in a styrofoam
box
2-avoid leaving in a motor vehicle,sun and heat
will deteriorate DBS
3-spots in an mulfuctioning refrigerator where
watermay drip on a soak the spots must be avoided.
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