Vitamin D Status in Central Europe

Table 1

Serum 25-hydroxyvitamin D concentrations reported for neonates and infants. (Mean, range, and standard deviations are shown.)

Country	City	Latitude, longitude	Year	Number, sex	Age	Population	Season	Assay, machine (manufacturer)	Serum 25(OH)D (ng/mL)	Reference
Czech Republic	Pilzen	49.8°N; 13.3°E	April–June 2006	28	Newborn	Term, cross section	Spring	CLIA, Liaison (DiaSorin)	7 (6–13)	[16]
Poland	Warsaw	52.2°N; 21.0°E		31	Newborn	Healthy	Winter	Radiocompetitive, Extrelut column and radioassay	7 ± 5	[17]
Poland	Warsaw	52.2°N; 21.0°E		22	Newborn	Healthy	Summer		19 ± 10	[17]
Poland	Warsaw	52.2°N; 21.0°E	2001-2002	20 M; 17 F	Newborn; 1 week	Healthy	Annual	CLIA, Liaison (DiaSorin)	15 ± 9	[18]
Poland	Warsaw	52.2°N; 21.0°E	2001-2002	56	Newborn; 3 weeks	Healthy	Annual	CLIA, Liaison (DiaSorin)	15 ± 9	[19]
Poland	Warsaw	52.2°N; 21.0°E		76	Newborn; cord blood	Healthy	Winter	CLIA, Liaison (DiaSorin)	14 ± 8	[20]
Poland	Warsaw	52.2°N; 21.0°E		40	Newborn; cord blood	Healthy	Summer	CLIA, Liaison (DiaSorin)	24 ± 9	[21]
Poland	Warsaw	52.2°N; 21.0°E		15 M; 15 F	2 weeks	Healthy	Winter, summer	CLIA, Liaison (DiaSorin)	8.5 (7–12)	[22]
Poland	Warsaw	52.2°N; 21.0°E		15 M; 15 F	10 weeks	Healthy, after supplementation	Winter, summer	CLIA, Liaison (DiaSorin)	55 (35–67)	[22]
Poland				134	6 months	Healthy, after supplementation		RIA	43 ± 20	[23]
Poland				98	12 months	Healthy, after supplementation		RIA	29 ± 12	[23]