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Test ID FHDLS HDL Cholesterol Subclasses

Method Name

Precipitation, Colorimetric, Enzymatic

Reporting Name

HDL Cholesterol Subclasses

Specimen Type


Specimen Required

Draw blood in a plain red-top tube(s), serum gel tube(s) is acceptable. Spin down and send 3 mL of serum refrigerated in a plastic vial.


Required: Fasting for at least 12 hours. If a cholesterol measurement is to be performed along with other lipid tests, the patient should fast 9 - 12 hours prior to collection.

Specimen Minimum Volume

1.5 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Refrigerated (preferred) 7 days
  Frozen  14 days

Reference Values

HDL-2 cholesterol:  9 - 38 mg/dL

HDL-3 cholesterol:  22 - 35 mg/dL

Day(s) and Time(s) Performed

Monday through Friday 

Performing Laboratory

Quest Diagnostics Nichols Institute

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
FHDLS HDL Cholesterol Subclasses 50409-2


Result ID Test Result Name Result LOINC Value
Z1556 HDL-2 Cholesterol 9832-7
Z1560 HDL-3 Cholesterol 9833-5