1198
Appendix A
TABLE A-3
Blood Chemistry*
Test
Conventional Units
Conversion Factor
SI Units
Alanine aminotransferase
(ALT, SGPT, GPT)
0–35 units/L
†
0.02
0-0.7
μ
kat/L
†
Alkaline phosphatase
41–133 units/L
†,‡
0.02
0.7–2.2
μ
kat/L
†,‡
Ammonia
18–60
μ
g/dL
0.590
11–35
μ
mol/L
Amylase
20–110 units/L
†
0.02
0.33–1.83
μ
kat/L
†
Aspartase aminotransferase
(AST, SGOT, GOT)
0–35 units/L
†
0.02
0–0.58
μ
kat/L
†
Bicarbonate
24–31 mEq/L
1.0
24–31 mmol/L
Bilirubin (total)
0.1–1.2 mg/dL
17.100
2–21
μ
mol/L
Direct
0.1–0.5 mg/dL
<8
μ
mol/L
Indirect
0.1–0.7 mg/dL
<12
μ
mol/L
Blood urea nitrogen (BUN)
8–20 mg/dL
0.360
2.9–7.1 mmol/L
Calcium (Ca
2+
)
8.5–10.5 mg/dL
0.250
2.1–2.6 mmol/L
Chloride
98–106 mEq/L
1.000
98–106 mmol/L
Creatine kinase (CK, CPK)
32–267 units/L
†
0.017
0.53–4.45
μ
kat/L
†
Creatinine (serum)
0.6–1.2 mg/dL
‡
83.300
50–100
μ
mol/L
‡
Gamma-glutamyl-transpeptidase
(GGT)
9–85 units/L
†
0.02
0.15–1.42
μ
kat/L
†
Glucose (plasma, fasting)
<100 mg/dL
0.055
<5.6 mmol/L
Glycosylated hemoglobin (HbA
1c
)
3.9–6.9%
Lactate dehydrogenase (LDH)
88–230 units/L
†
0.02
1.46–3.82
μ
kat/L
†
Lipids
Cholesterol
<200 mg/dL (optimal)
0.26
<5.2 mmol/L (optimal)
200–239 mg/dL
(borderline)
5.2–6.1 mmol/L
(borderline)
≥
240 (high)
>6.2 mmol/L (high)
LDL cholesterol
<130 mg/dL
0.026
<3.37 mmol/L
HDL cholesterol
<40 low
>60 high
0.026
1.04 mmol/L
1.56 mmol/L
Triglycerides
<165 mg/dL
0.01
<1.8 mmol/L (fasting)
Lipase
0–160 units/L
†
0.02
0-2.66
μ
kat/L
†
Magnesium
1.3–2.1 mg/dL
0.50
0.65–1.05 mmol/L
Osmolality
275–295 mOsm/kg H
2
O
275–295 mmol/kg H
2
O
pH (arterial)
7.35–7.45
Phosphorus (inorganic)
2.5–4.5 mg/dL
0.32
0.80–1.45 mmol/L
Potassium
3.5–5.0 mEq/L
1.0
3.5–5.0 mmol/L
Prostate specific antigen (PSA)
0–4 ng/mL
1.0
0–4
μ
g/L
Protein total
6.0–8.0 g/dL
10.0
60–80 g/L
Albumin
3.4–4.7 g/dL
10.0
34–47 g/L
Globulin
2.3–3.5 g/dL
10.0
23–35 g/L
A/G ratio
1.0–2.2
10.0
10–22
Thyroid tests
Thyroxine (T
4
) total
5.0–11.0
μ
g/dL
12.80
64–142 nmol/L
Thyroxine, free (FT
4
)
0.7–1.86 ng/dL
12.87
9–24 pmol/L
†
Triiodothyronine (T
3
) total
95–190 ng/dL
0.015
1.5–2.9 nmol/L
Thyroid-stimulating hormone
(TSH)
0.4–4.2
μ
U/mL
1.0
0.4–4.2 mU/L
Thyroglobin
3–42 ng/mL
1.0
3–42
μ
g/L
Sodium
135–145 mEq/L
1.0
135–145 mmol/L
Uric acid
Male: 2.4–7.4 mg/dL
59.48
Male: 140–440
μ
mol/L
Female: 1.4–5.8 mg/dL
Female: 88–345
μ
mol/L
*Values may vary with laboratory.The values supplied by the laboratory performing the test should always
be used since the ranges may be method specific.
†
Laboratory and/or method specific.
‡
Varies with age and muscle mass.
Values obtained from Papadakis MA, McPhee SJ. Current Medical Diagnosis andTreatment. 52nd ed.
NewYork: McGraw Medical; 2013:1722–1736; Fischbach F, Dunning MB. A Manual of Laboratory and
DiagnosticTests. 8th ed. Philadelphia, PA: Wolters Kluwer Health/Lippincott Williams &Wilkins; 2009; and
other sources.
