Laboratory Assessment of Nutritional Status: Bridging Theory & Practice. MARY LITCHFORD

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3.5-5.0 g/dL 10.0 35-50 g/L Alkaline Phosphatase (S) 35-112 U/L 0.01667 0.5-2.0 μkat/L Ammonia (vP) 10-80 mcg/dL 0.5909 6-47 μmol/L Aspartate Aminotransferase (AST) (S) 0-35 U/L 0.01667 0.0-0.58 μkat/L Bilirubin, total (S) 0.1-1.2 mg/dL 17.10 2-20 μmol/L

      S = Serum, B = Blood, P = Plasma, U = Urine

      Table 2. Selected SI Units & Conversion Table for Values in Clinical Chemistry

Component	Conventional Reference values/ Units	Conversion factor	SI Reference Values/ Units
Bilirubindirect (S)	0.0-0.2 mg/dL	17.10	0.0-4.0 μmol/L
Calcium (S)	8.6-10.3 mg/dL	0.2495	2.15-2.57 mmol/L
Chloride (S)	98-108 mEq/L	1.00	98-108 mmol/L
Cholesterol (P)	<200 mg/dL	0.02586	<5.15 mmol/L
Creatinine (S) Males Females	0.6-1.2 mg/dL 0.5-1.1 mg/dL	88.40 88.40	53-106 μmol/L 44-97 μmol/L
Creatinine (U)	Variable g/24 hr	8.840	Variable mmol/L
Cyanocobalamin (S) (Vitamin B12)	250-950 pg/mL	0.7378	118-701 pmol/L
Ferritin (S) Males Females	29-438 ng/mL 9-219 ng/mL	1.00 1.00	29-438 μg/dL 9-219 μg/dL
Folate (S)	2.5-20 ng/mL	2.266	6-46 nmol/L
Glucose (P) fasting	70-100 mg/dL	0.05551	3.9-5.5 mmol/L
Hematocrit volume fraction Female Male	37-47% 42-52%	0.01 0.01	0.37-0.47 0.42-0.52
Hemoglobin (B) Male Female	14-18 g/dL 12-16 g/dL	0.6214 0.6214	8.7-11.2 mmol/L 7.4-9.9 mmol/L
Iron (S) Male Female	80-180 mcg/dL 60-160 mcg/dL	0.1791 0.1791	14-32 μmol/L 11-29 μmol/L

      Table 2. Selected SI Units & Conversion Table for Values in Clinical Chemistry

Component	Conventional Reference values/ Units	Conversion factor	SI Reference Values/ Units
Iron binding capacity	230-410 mcg/dL	0.1791	41-73 μmol/L
Lactate dehydrogenase (S)	120-300 U/L	1	120-300 U/L
Lipoproteins (P) low density (LDL) high density (HDL)	<100 mg/dL > 40 <60 mg/dL	0.02586 0.02586	< 2.59 mmol/L >1.0 < 1.55 mmol/L
Mean corpuscular hemoglobin concentration (MCH) mass	27-31 pg	1	27-31 pg
MCV (MCV)	80-100 um3 (microns3)	1	80-100 fL
Mean corpuscular hemoglobin concentration (MCHC)	32-36 %	0.01	0.32-0.36
Osmolality (P)	278-300 mOsm/kg H2O	1.00	278-300 mmol/kg H2O
Osmolality (U) Random	Varies mOsm/kg	1.00	Varies mmol/kg
Phosphate (S)	2.3-4.1 mg/dL	0.3229	0.75-1.35 mmol/L
Potassium ion (S)	3.7-5.1 mEq/L	1.00	3.7-5.1 mmol/L
Sodium ion (S)	134-142 mEq/L	1.00	134-142 mmol/L

      Table 2. Selected SI Units & Conversion

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