LDL Cholesterol, Direct


Abbrev Code:LDLDIR   
Order Code:LAB102Order Name:LDL Cholesterol Direct
Order Instructions:St. Joseph: Order LDD. UMMC-East/Lakes/Northland: Order LDLDIR
Synonyms:Low Density Lipoprotein; LDLDIR; Lipid
Methodology:Bichromatic endpoint
St. Joseph: Liquid selective detergent
CPT Codes: 83721 x1
Turnaround Time:Performed and reported 24 hours/day.


Collection Instructions

Specimen:Blood
Optimal Volume:2.5 mL
Minimum\Peds Volume:0.6 mL
Container:Green (lithium heparin, gel), St Joseph - Green (lithium heparin, no gel)
Alternate Containers: Green (lithium heparin, no gel), Red (no gel), Red or gold (gel), St Johns/St Joseph/Woodwinds - Red (no gel)
Patient Preparation:Please do not eat 10-12 hours before your appointment if you are coming in fasting for labs on lipids, cholesterol, or glucose (sugar). This does not apply to pregnant women.
Water, tea or black coffee (with nothing added) is okay. Do not drink other fluids, diet soda or chew gum.
If you have concerns about taking your medications, please send a message by clicking on Secure Messaging, Message Your Care Team.


Processing and Shipping

Specimen Processing:Separate serum/plasma from cells within 2 hours of collection. Centrifuge and aliquot 1.25 mL, 0.2 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Stability:3 days refrigerated; 3 months frozen
Test Performed at or Referral Lab Chemistry  (UMMC-East Bank, Lakes, Northland, St. Joseph's)


Interpretive

Reference Range:Lipid Reference Ranges
Use:

 

LDL-Cholesterol: Therapeutic goal
100 mg/dL or less if CHD is present
129 mg/dL or less of no CHD and 2 or more risk factors
159 mg/dL or less if no CHD

 



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