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To assess and monitor risk for coronary artery disease.
Serum (1 mL) collected in a red- or tiger-top tube. Plasma (1 mL) collected in a green-top (heparin) tube is also acceptable. It is important to use the same tube type when serial specimen collections are anticipated for consistency in testing.
|Risk||Conventional Units||SI Units (Conventional Units × 0.0259)|
|Children and adolescents (less than 20 yr)|
|Desirable||Less than 170 mg/dL||Less than 4.4 mmol/L|
|Borderline||170–199 mg/dL||4.4–5.2 mmol/L|
|High||Greater than 200 mg/dL||Greater than 5.2 mmol/L|
|Adults and older adults|
|Desirable||Less than 200 mg/dL||Less than 5.18 mmol/L|
|Borderline||200–239 mg/dL||5.18–6.19 mmol/L|
|High||Greater than 240 mg/dL||Greater than 6.22 mmol/L|
|Plasma values may be 10% lower than serum values.|