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Effects of wrong collection techniques on test results
1.
APPLICATION
OF
TOURNIQUET
INTRAVENOUS
INFUSION
VENIPUNCTURE
EFFECTS OF WRONG COLLECTION TECHNIQUES ON TEST
RESULTS
WRONG COLLECTION TECHNIQUE EFFECT ON TEST RESULTS
TOURNIQUET IS APPLIED TOO TIGHT OR TOO LONG
DURING VENEPUNCTURE
RESULT SHOWS ELEVATED LEVEL OF HEMOGLOBIN,
PROTEIN OR CALCIUMDUE TO VENOUS STASIS
BLOOD IS COLLECTED FROM AN ARMWHICH IS GIVEN
AN INTRAVENOUS INFUSION
RESULT SHOWS ELEVATED LEVEL OF SUBSTANCE(EG:
GLUCOSE) GIVEN VIA AN INTRAVENOUSINFUSION.THIS
IS DUE TO HIGH CONCENTRATION OFTHE INFUSED
SUBSTANCEIN BLOOD.
BLOOD IS COLLECTED TOO RAPIDLY AND A THIN,FINE
NEEDLE IS USED
CHANGES PLASMA OR SERUMRESULTS(INACCURATE)
DUE TO HEMOLYSIS
BLOOD GASES SPECIMEN IS NOT COLLECTED IN SYRINGE
ANDNOT TRANSPORTEDIN ICE SLUSH
TEST RESULTS IS INACCURATEASTHE BLOOD GASES
RATIOIS ALTERED