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Cholesterol, LDL
| Item | Value | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Approval req'd? | No | ||||||||||||||||
| Available Stat? | No | ||||||||||||||||
| Test code | LDL | ||||||||||||||||
| Test group | Cholesterol | ||||||||||||||||
| Performed by | Parnassus Chemistry | ||||||||||||||||
| In House Availability | Test available 24 hours per day 7 days per week | ||||||||||||||||
| Method | Calculated (Friedewald formula) | ||||||||||||||||
| Patient Preparation | Patient should fast for 9-12 hours prior to collection. | ||||||||||||||||
| Container type | Gold top or Light Green top | ||||||||||||||||
| Amount to Collect | 3 mL blood | ||||||||||||||||
| Sample type | Serum or plasma | ||||||||||||||||
| Preferred volume | 1.5 mL serum or plasma | ||||||||||||||||
| Min. Volume | 1 mL serum or plasma | ||||||||||||||||
| Units | mg/dL | ||||||||||||||||
| Normal range | Children and Adolescents (< 20 y/o):
Adults: (≥ 20 y/o):
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| Synonyms | low density lipoprotein; LDL cholesterol; Coronary risk panel; lipid panel | ||||||||||||||||
| Stability | Room temperature 8 hours, refrigerated 2 days, frozen at -20C 1 week | ||||||||||||||||
| Additional information | To convert mg/dL to mmol/L (SI units) multiply by 0.0259. LDL cholesterol is calculated from the formula: Total cholesterol-(HDL cholest. + Triglycerides/5). THIS ESTIMATE IS NOT RELIABLE IF TRIGLYCERIDES EXCEED 400 mg/dL, at which level the calculation of LDL cholesterol is suppressed and an explanatory comment is appended. To obtain a more reliable estimate of LDL cholesterol in this situation, request "sendout testing for direct LDL assay. |
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| CPT coding | 80061 | ||||||||||||||||
| LOINC code | 13457-7 | ||||||||||||||||
| Last Updated | 12/18/2012 12:42:27 PM | ||||||||||||||||
| Entry Number | 194 |
If you have additional questions regarding this test, please call: 415-353-1667