Units conversion

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To convert from American or conventional units to European or SI units multiply the American result by the conversion factor to obtain an equivalent European measure. Divide the European result by the conversion factor to obtain an equivalent American measure.


Item
Vitamin D, 25-hydroxy
Vitamin B12
Triiodothyronine, free (T3)
Thyroxine, free (T4)
Sodium
Potassium
Progesterone
Magnesium
Iron, total
Iron binding capacity, total
Ferritin
Homocysteine (total)
Glucose
Estradiol
Estriol
Estrone

European
pmol/L
pmol/L
nmol/L
pmol/L
mmol/L
mmoI/L
nmol/L
mmol/L
µmol/L
µmol/L
pmol/L
µmol/L
mmol/L
pmol/L
nmol/L
pmoI/L

Factor
2.496
0.738
0.0154
12.87
1
1
3.18
0.411
0.179
0.179
2.247
7.397
0.0555
3.671
3.467
37

American
ng/mL
pg/mL
pg/dL
ng/dL
mEq/L
mEq/L
ng/mL
mg/dL
µg/dL
µg/dL
ng/mL
mg/L
mg/dL
pg/mL
ng/mL
ng/dL

Convert HbA1c to estimated average glucose (eAG)
eAG (mg/dL) = (28.7*HbA1c) - 46.7
HbA1c 5    = eAG 97 mg/dL or 5.4 mmol/L
HbA1c 5.2 = eAG 103 mg/dL or 5.7 mmol/L
Discussion of A1c to eAG relationship and
other conversions can be found here