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Reference Values During Pregnancy


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Bilirubin , conjugated , direct (serum)

   Units Nonpregnant Adult First Trimester Second Trimester Third Trimester
mg/dL 0.1 - 0.4 0 - 0.1 0 - 0.1 0 - 0.1
μmol/L 1.7 - 6.8 0 -  1.7 0 -  1.7 0 -  1.7

Some causes of elevated conjugated bilirubin include biliary diseases, hepatitis, cirrhosis, neoplastic states,cholestatic drug reactions, Dubin-Johnson syndrome, and Rotor syndrome.


References:

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
Wallach, J. Interpretation of Diagnostic Tests, Eighth ed. Lippincott Williams & Wilkins, 2007 Fischbach FT, Dunning MB III, eds. A Manual of Laboratory and Diagnostic Tests, 7th ed. Philadelphia, Lippincott Williams and Wilkins,2004

 

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