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Common Laboratory (LAB) Values [ V ]

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Lab (Specimen)

Conventional Units

SI Units
Vanillylmandelic acid (VMA) (urine)
top of page		 leq 10 mg/day <50 µmol/day
Vitamin A (serum)
top of page		 30 - 95 µg/dL 1.05 - 3.32 µmol/L
Vitamin B6 (plasma)
top of page		 5 - 24 ng/mL 30 - 144 nmol/L
Vitamin B12 (serum)

top of page		 200 - 800 pg/mL

Alt:  210-911 pg/mL

Folate, Serum
0 - 3.3 ng/mL: Deficient
3.4 - 5.3 ng/mL: Indeterminate
5.4 - 40.0 ng/mL: Normal

 >150 - 590 pmol/L
Vitamin C (plasma)
top of page		 0.2 - 2.0 mg/dL 11 - 114 µmol/L
Vitamin D (1,25-Dihydroxy-vitamin D) (serum)
top of page		 24 - 65 pg/mL 58 - 156 pmol/L
25-Hydroxyvitamin D (serum)
top of page		 10 - 55 ng/mL 25 - 137 nmol/L
Vitamin E (serum)
top of page		 5 - 20 µg/mL 12 - 46 µmol/L

Important Notes   top of page icon

>Unless noted, all values are for adults.

>All laboratory values listed are method dependent (Methods include: immunoassay, colorimetry, electrophoresis, HPLC, etc).

>Values may vary between laboratories.

References
Basic Skills in Interpreting Laboratory Data, 5th Ed. (2013) Lee M (editor). American Society of Health-System Pharmacists, ISBN 1585283436.

Drug information handbook: a comprehensive resource for all clinicians and healthcare professionals, 24th Ed. (2015) Lexi-Comp.
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