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Clear
 
Test Code:
LDL

Order Name:
LDL Cholesterol (LDL-C, Direct Method)

 
Useful For:
Evaluation of coronary heart disease (CHD) risk
 
Methodology:
Measured, Liquid Selective Detergent
 
AliasesName:
Cholesterol in Low-Density Lipoproteins (LDL)
Cholesterol, DLD (Low-Density Lipoprotein)
Direct LDL (Low-Density Lipoprotein)
LDL (Low-Density Lipoprotein) Cholesterol
LDL Cholesterol (LDLC)
LDL Direct
Low (Low-Density Lipoprotein) Direct
LDL-C
Low-Density Lipoprotein (LDL)
 
 
 
Test Code:
LDL

Order Name:
LDL Cholesterol (LDL-C, Direct Method)

 
Patient Preparation:
  1. Patient should be fasting at least 12 hours.
  2. Patients should not drink any alcoholic beverages at least 24 hours.
  3. Patient can drink water as usual.
  4. Patient who takes the antihypertensive drugs, can take it as usual.
 
Collection Specimen Or Container:
Blood/ Plain blood (Red top) 6 mL, 1 tube
 
Specimen Testing Type:
Serum, minimum volume 0.5 mL
 
Sub Mission Container:
Plastic vial
 
Rejection Criteria:
Hemolysis: 4+ reject 
 
Specimen Stabillity:
Specimen Type Temperature Time
Serum Refrigerated, 2oC to 8oC 5 days
Frozen, -20o 3 months
 
 
 
Test Code:
LDL

Order Name:
LDL Cholesterol (LDL-C, Direct Method)

 
Method detail:
Measured, Liquid Selective Detergent
 
Schedule:
Tested daily (24 hours)
 
Turnaround Time:
Collected specimen to report within 1.5 hours (90 mins)
 
Performing Location:
Chemistry, Laboratory Department Tel. 13224
 
Specimen Retention Time:
5 days
 
 
 
Test Code:
LDL

Order Name:
LDL Cholesterol (LDL-C, Direct Method)

 
 
Clinical Information:
Plasma lipoproteins are spherical particles containing varying amounts of cholesterol, triglycerides, phospholipids, and proteins. The phospholipid, free cholesterol, and protein constitute the outer surface of the lipoprotein particle, while the inner core contains mostly esterified cholesterol and triglycerides. These particles serve to solubilize and transport cholesterol and trigylcerides in the bloodstream. The relative proportions of protein and lipid determine the density of these lipoproteins and provide a basis on which to begin their classification. These classes are: chylomicrons, very-low-density lipoprotein (VLDL), low-density lipoprotein (LDL), and high-density lipoprotein (HDL). Numerous clinical studies have shown that the different lipoprotein classes have very distinct and varied effects on coronary heart disease (CHD) risk.
 
Reference Value:
< 130 mg/dL
 
Interpretation:
CHD Risk Factors:

+1 Age: Men, 45 years and older
              Women, 55 years and older or premature menopause without estrogen therapy

+ 1 Family history of premature CHD

+ 1 Current smoking

+ 1 Hypertension

+ 1 Diabetes mellitus

+ 1 Low HDL Cholesterol: 39 mg/dL or less

- 1 High HDL Cholesterol: 60 mg/dL or greater
 
Clinical Reference:
  1. Manufacturer’s reagent package insert, Architect® Direct LDL, Sekisui Diagnostics P.E.I. Inc.70 Watts Ave. Charlottetown, Prince Edward Island Canada C1E 2B9, February 2017.
  2. http://www.mayomedicallaboratories.com (Retrieved: 01 Jan 2019)