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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

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