Reference Values For Alpha-1-antitrypsin in Pregnancy

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Reference Values During Pregnancy

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Alpha-fetoprotein (serum)

Units	Nonpregnant Adult	First Trimester*	Second Trimester*	Third Trimester*
ng/mL	<15	18 - 119	96 - 302	160 - 550
μg/liter	<15	18 - 119	96 - 302	160 - 550

* Minimum and maximum values. Small sample size.

References:

Seppälä M, Ruoslahti E.Radioimmunoassay of maternal serum alpha fetoprotein during pregnancy and delivery.
Am J Obstet Gynecol. 1972 Jan 15;112(2):208-12.PMID: 4109399

Kratz A, Ferraro M, Sluss PM, Lewandrowski KB.Case records of the Massachusetts General Hospital. Weekly clinicopathological exercises. Laboratory reference values.N Engl J Med. 2004 Oct 7;351(15):1548-63. Erratum in: N Engl J Med. 2004 Oct 7;351(23):2461. PMID: 15470219