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Epic Test Code NA Cholesterol, LDL (calculated)

Important Note

This test is NOT ORDERABLE IN EPIC. Can only be ordered in Central Lab.

Performing Location(s)

BMC

Specimen Type

Serum or Plasma

Preferred Container

Gold or Red top tube

Alternate Container

Green top tube

Blood Tube Draw Volume

Min 50% draw volume  

Minimum Volume to Submit for Testin

0.5 mL Serum/Plasma

  • Multiple test can be performed from this volume. For question please contact the lab at 547-3975.  

Storage Requirements

Sample tubes should be centrifuged within 2 hour of collection followed by transfer of the serum (red or gold top) or plasma (green top) to a labeled plastic, aliquot tube.

See Causes of Rejection for temperature requirements.

Transportation Needs

Deliver specimen to laboratory within 1 hour of collection if unspun. If not possible see "storage Requirements". 

Reference Values

Risk Classification (NCEP III Guidelines)
The National Cholesterol Education Program Adult Treatment Panel III (NCEP- ATP III) provides the following classifications of LDL concentrations:

>18 Adults
Parameter Units Range Desirable Borderline High Risk Very High
LDL Cholesterol mg/dL 75-193
**< 100 Optimal		 < 130 ** 130 - 159 160 - 189 ≥190

</=18 years of age
Parameter Units Range Desirable Borderline High
LDL Cholesterol mg/dL 50 - 110 < 110 110 - 129 ≥ 130

 

Causes for Rejection

Mislabeled or unlabeled specimen.

Less than 50% draw for Vacutainer tubes
>5 days refrigerated
>24 hours room temp
> 3 monts frozen ≥-70C
No add-ons to plasma > 8 hours  
Hemolysis > 500 mg/dL HgB
Lipemia > 900 mg/dL Trig
Bilirubin > 40 mg/dL Bili

Additional Information

This test is not available on a STAT basis. If an emergency request is necessary, call 3731 for availability. Pathologist approval may be required.

Cannot be ordered as a separate test, must be ordered as a CVP or CVPC - See entries for Lipid Profile  

 

Friedwald Equation:

[LDLC] = [Total CHOL] - [HDL CHOL] - ([TG]/5)

Days of Analysis

All

Available STAT

No

Methodology

Calculated from the components of CVPC

CPT Code

See individual components

Last Updated

18-Mar-22 BHD