General Chemistry

Note: Reference ranges vary according to brand of laboratory assay materials used. Check normal reference ranges from your facility’s laboratory when evaluating results.

Lab	Conventional	SI Units
Albumin	3.5–5.0 g/100 mL	35–50 g/L
Aldolase	1.3–8.2 U/L	22–137 nmol sec_1/L
Alkaline phosphatase	13–39 U/L, infants and adolescents up to 104 U/L	217–650 nmol · sec_1/ L, up to 1.26 _mol/L
Ammonia	12–55 umol/L	12–55 _mol/L
Amylase	4–25 units/mL	4–25 arb. unit
Anion gap	8–16 mEq/L	8–16 mmol/L
AST, SGOT	Male: 8–46 U/L Female: 7–34 U/L	0.14–0.78 ukat/L 0.12–0.58 ukat/L
Bilirubin, direct	up to 0.4 mg/100 mL	Up to 7 umol/L
Bilirubin, total	up to 1.0 mg/100 mL	Up to 17 umol/L
BUN	8–25 mg/100 mL	2.9–8.9 mmol/L
Ca + (calcium)	8.5–10.5 mg/100 mL	2.1–2.6 mmol/L
Calcitonin	Male: 0–14 pg/mL Female: 0–28 pg/mL	0–4.1 pmol/L 0–8.2 pmol/L
Carbon dioxide (CO2)	24–30 mEq/L	24–30 mmol/L
Chloride (Cl-)	100–106 mEq/L	100–106 mmol/L
Cholesterol	< 200 mg/dL	<5.18 mmol/L
Cortisol	(AM) 5–25 ug/100 mL (PM) <10 ug/100 mL	0.14–0.69 umol/L 0–0.28 umol/L
Creatine	Male: 0.2–0.5 mg/dL Female: 0.3–0.9 mg/dL	15–40 umol/L 25–70 umol/L
Creatine kinase (CK)	Male: 17–148 U/L Female: 10–79 U/L	283–2467 nmol sec_1/L 167–1317 nmol sec_1/L
Creatinine	0.6–1.5 mg/100 mL	53–133 umol/L
Ferritin	10–410 ng/dL	10–410 ug/dL
Folate	2.0–9.0 ng/mL	4.5–0.4 nmol/L
Glucose	70–110 mg/100 mL	3.9–5.6 mmol/L
Ionized calcium	4.25–5.25 mg/dL	1.1–1.3 mmol/L
Iron (Fe)	50–150 ug/100 mL	9.0–26.9 umol/L
Iron binding capacity (IBC)	250–410 ug/100 mL	44.8–73.4 umol/L
K+(potassium)	3.5–5.0 mEq/L	3.5–5.0 mmol/L
Lactic acid	0.6–1.8 mEq/L	0.6–1.8 mmol/L
LDH (lactic dehydrogenase)	45–90 U/L	750–1500 nmol · sec_1/L
Lipase	2 units/mL or less	Up to 2 arb. unit
Magnesium	1.5–2.0 mEq/L	0.8–1.3 mmol/L
Mg++ (magnesium)	1.5–2.0 mEq/L	0.8–1.3 mmol/L
Na+ (sodium)	135–145 mEq/L	135–145 mmol/L
Osmolality	280–296 mOsm/kg water	280–296 mmol/kg
Phosphorus	3.0–4.5 mg/100 mL	1.0–1.5 mmol/L
Potassium (K+)	3.5–5.0 mEq/L	3.5–5.0 mmol/L
Prealbumin	18–32 mg/dL	180—320 mg/L
Protein, total	6.0–8.4 g/100 mL	60–84 g/L
PSA	< 4.0 ng/mL	< 4 ug/L
Pyruvate	0–0.11 mEq/L	0–0.11 mmol/L
Sodium (Na+)	135–145 mEq/L	135–145 mmol/L
T3	75–195 ng/100 mL	1.16–3.00 nmol/L
T4, free	Male: 0.8–1.8 ng/dL Female: 0.8–1.8 ng/dL	10–23 pmol/L 10–23 pmol/L
T4, total	4–12 ug/100 mL	52–154 nmol/L
Thyroglobulin	3–42 u/mL	3–42 ug/L
Triglycerides	40–150 mg/100 mL	0.4–1.5 g/L
TSH	0.5–5.0 uU/mL	0.5–5.0 arb. unit
Urea nitrogen	8–25 mg/100 mL	2.9–8.9 mmol/L
Uric acid	3.0–7.0 mg/100 mL	0.18–0.42 mmol/L