Reference Values For 17-hydroxyprogesterone in Pregnancy

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Reference Values During Pregnancy

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17-hydroxyprogesterone (serum)

Units	Menstruating Female		First Trimester	Second Trimester	Third Trimester
ng/dL	20 -100	(Follicular phase)	172 - 941	172 - 941	512 - 2772
	100 - 250	(Mid-cycle peak)
	100 - 500	(Luteal phase)
nmol/L	0.6 - 3	(Follicular phase)	5.2 - 28.5	5.2 - 28.5	15.5 - 84
	3 - 7.5	(Mid-cycle peak)
	3 - 15	(Luteal phase)

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