Figure 2From: Pharmacokinetics of a single oral dose of vitamin D3 (70,000 IU) in pregnant and non-pregnant women Blood and urine specimen collection schedules. Participants in “single-dose only” groups were randomized to one of two schedules (A or B) of specimen collection over a period 70 days. Participants in the “weekly dose” groups were similarly randomized to one of two schedules (C or D); however, the analysis of single-dose pharmacokinetics only included those specimens collected up to and including day 7, preceding administration of the 2nd vitamin D dose.Back to article page