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Reference Values During Pregnancy


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D-dimer (plasma)

   Units Nonpregnant Adult First Trimester Second Trimester Third Trimester
g/mL <  0.5 0.05 - 0.95 0.32 - 1.29 0.13 -1.7
g/L
ng/mL
< 500 50 - 950 320 - 1290 130 - 1700
nmol/L
< 2.7 0.3 - 5.2 1.8 - 7.1 0.7 - 9.3

Some causes of an elevated D-dimer include deep vein thrombosis (DVT), pulmonary embolism (PE), disseminated intravascular coagulation (DIC), cancer, underlying inflammation, and cardiac, renal or liver disease .
 


References:

1. Abbassi-Ghanavati M, Greer LG, Cunningham FG. Pregnancy and laboratory studies: a reference table for clinicians. Obstet Gynecol. 2009 Dec;114(6):1326-31. PMID:19935037
2.  Kratz A, Ferraro M, Sluss PM, Lewandrowski KB. Laboratory reference values. N Engl J Med. 2004;351(15):1548-15632. PMID:15470219
3. Wallach, J. Interpretation of Diagnostic Tests, Eighth ed. Lippincott Williams & Wilkins, 2007
 

 

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