Table 2 Median micronutrient values and prevalence of those with values out with reference ranges in patients admitted with COVID-19 (n = 281)

Red cell vitamin B1 (n = 194)

 Median (IQR)

326 (261–427) ng/g of Hb

 ≥ 275 ng/g of Hb

135 (48%)

 < 275 ng/g of Hb

59 (30%)

Red cell vitamin B2 (n = 64)

 Median (IQR)

2.01 (1.73–2.52) nmol/g of Hb

 ≥ 1.0 nmol/g of Hb

64 (100%)

 < 1.0 nmol/g of Hb

0 (0%)

Red cell vitamin B6 (n = 64)

 Median (IQR)

450 (362–586) pmol/g of Hb

 ≥ 250 pmol/g of Hb

62 (97%)

 < 250 pmol/g of Hb

2 (3%)

Red cell selenium (n = 198)

 Median (IQR)

5.58 (4.85–6.46) nmol/g Hb

 ≥ 3.0 nmol/g Hb

198 (100%)

< 3.0 nmol/g Hb

0 (0%)

Plasma selenium (n = 262)

 Median (IQR)

0.76 (0.56–0.94) µmol/L

 ≥ 0.8 µmol/L

143 (55%)

 < 0.8 µmol/L

119 (45%)

Serum vitamin B12 (n = 262)

 Median (IQR)

455 (292–819)

 ≥ 188 ng/L

251 (96%)

 < 188 ng/L

11 (4%)

Serum vitamin D (n = 111)

 Median (IQR)

31 (19–71) ng/L

 ≥ 50 nmol/L

41 (37%)

 < 50 nmol/L

70 (63%)

Serum magnesium (n = 264)

 Median (IQR)

0.871 (0.73–0.88) mmol/L

 ≥ 0.75 mmol/L

194 (73%)

 < 0.75 mmol/L

70 (27%)

Plasma copper (n = 262)

 Median (IQR)

20 (16–23) µmol/L

 ≤ 22 µmol/L

172 (66%)

 > 22 µmol/L

90 (35%)