800

4–6 months

NCa^a

60-105 (5 studies; n = 188)

—

—

Byrne et al., 1995

1,800

3 months

NCa

65, 80 (2 studies; n = 55)

—

—

Byrne et al., 1995

1,800

3 months

NCa

57–86

82.4–83.8

—

Honkanen et al., 1990

2,000

6 months

NCa

—

—

—

Johnson et al., 1980

10,000

4 weeks

—

105^b

—

—

Stamp et al., 1977

10,000

10 weeks

—

110^b

—

—

Davies et al., 1982

20,000

4 weeks

—

150^b

—

—

Stamp et al., 1977

50,000

6 weeks

3.75

320

388

—

Schwartzman and Franck, 1987

50,000

15 years

3.12

560

—

—

Davies and Adams, 1978

100,000

10 years

3.20

865

215

0.508

Selby et al., 1995

200,000

2 years

3.78

1202

207

—

Selby et al., 1995

300,000

6 years

3.30

1692

184

0.432

Rizzoli et al., 1994

300,000

3 weeks

2.82

800

339

0.065

Rizzoli et al., 1994

Vitamin D poisoning

4.0 (n = 11)

1162 (n = 11)

—

—

Pettifor et al., 1995

Overfortification of milk

3.28 (n = 35)

560 (n = 35)

—

—

Blank et al., 1995

Reference levels

2.15–2.65

20–100 (10)

25–200 (9)

18–150

< 0.045

Blank et al., 1995

Haddad, 1980