Table 3 Mean levels of serum 25 (OH) D among pregnant women
Study | Vitamin D estimation method | Mean serum 25(OH) D | 25 (OH) D ranges in serum | ||
|---|---|---|---|---|---|
Deficiency | Insufficiency | Sufficiency/adequacy | |||
Ajmani et al. 2016 [35] | ELISA | 23.25 ng/ml ± 18.49 | < 20 ng/ml | 20–30 ng/ml | > 30 ng/ml |
Farrant et al. 2009 [32] | Radioimmunoassay | Median: 15.12 ng/ml | < 20 ng/ml | NM | NM |
Jani et al. 2014 [9] | Chemiluminescent immunoassay | 10.6 ng/mL | < 20 ng/ml | <20–30 ng/ml | 30 ng/ml |
Marwaha et al. 2011 [7] | ELISA | 9.28 ng/ml | < 20 ng/ml | NM | NM |
Sachan et al. 2005 [31] | Radioimmunoassay | 14.93 ng/mL | < 20 ng/ml | NM | Normal: 20–80 ng/ml nmol/L |
Sahu et al. 2009 [33] | Radioimmunoassay | 15.12 ng/ml ± 7.92 | < 20 ng/ml | NM | 30 ng/ml |
Sharma et al. 2016 [36] | ELISA | Deficiency: 7.10 ± 1.49 ng/ml | Severe < 10 ng/ml | Deficient < 20 ng/ml) | Normal 32–100 ng/ml |
Singla et al. 2015 [34] | ELISA | Median: 7.9 ng/ml (IQR 5.7, 12 | < 20 ng/ml | < 20–30 ng/ml | 30 ng/ml |
Krishnaveni et al. 2011 [37] | Radioimmunoassay | 15.6 ng/ml | < 20 ng/ml | NM | NM |
Veena et al. 2017Â [38] | Radioimmunoassay | NM | < 20 ng/ml | NM | NM |
Nandal et al. 2016 [39] | ELISA | 11.98 ng/ml | < 12 ng/ml | 12–20 ng/ml | 20–30 ng/ml |
Kumar et al. 2015 [40] | LC-MS/MS | 16.3 ng/ml | < 20 ng/mL | NM | NM |
Chary et al. 2015 [41] | HPLC | NM | < 19 ng/mL | 20–29 ng/mL | > 30 ng/mL |
Dasgupta et al. 2012 [42] | Radioimmunoassay | 38.4 ± 18.37 ng/ml | < 20 ng/ml | NM | NM |
Sablok et al. 2015 [43] | ELISA | 18.44 ng/ml | < 20 ng/ml | < 20–30 ng/ml | 30 ng/ml |