Activated partial thromboplastin time (Citrated plasma (cp))

Testcode:	E_APTT
Specimens:	1 ml Citrated plasma (cp)
Info:	Please send frozen citrated plasma samples only.
Preanalytics/Notes:	Centrifuge citrated blood after sampling, transfer citrated plasma into new tube, label it and then freeze it and dispatch it frozen. No blood sampling from central venous catheter.
Method:	Turbidimetry
Dimension:	s
Set-up:	Mon Tue Wed Thu Fri Sat Sun
Duration:	1 day
Indication/Significance:	Screening for haemorrhagic diatheses (screening of the intrinsic pathway), suspected haemophilia A and haemophilia B, monitoring of substitution therapy for haemophilia A and haemophilia B. Please note that we do not supply therapeutic target ranges for heparin therapy. To monitor treament with unfractionated heparin, we recommend analysis of anti factor Xa activity.
Interpretation:	Prolongated aPTT: more… Prolongated aPTT: Individual factor deficiency, consumptive coagulopathy, heparin/hirudin therapy, high-dose administration of vitamin K antagonists, lupus anticoagulant, presence of pathological inhibitors, presence of fibrin split products Shortened aPTT: Incorrect blood sampling, postsurgical, pregnancy, administration of ovulation inhibitors in the case of liver damages. close

both sex
from 0 - 14 Days
No reference range known for this age
from 15 Days - 0 Months	27,6 - 45,6 s
from 1 Month - 4 Months	24,8 - 40,7 s
from 5 Months - 10 Months	25,1 - 40,7 s
from 11 Months - 4 Years	24,0 - 39,2 s
from 5 Years - 9 Years	26,9 - 38,7 s
from 10 Years - 16 Years	24,6 - 38,4 s
from 17 Years - 120 Years	25,1 - 36,5 s

Representation of age: "from" refers to the commenced year(s) (month) of age; "until" refers to the completed year(s) (month) of age.