HDL (serum & plasma)
Name HDL
Chapter Endocrine, nutritional, metabolic/Lipids
Definition
This variable provides all measurements of HDL cholesterol in either serum or plasma.
Data Type Continuous
Data sources GPRD
Dictionaries Read
Repeated Yes
Units mmol/L
Range (min/max) 0.01-50
Valid event date range 01/01/1900 - 25/03/2010
Agreed 14.03.2011 (Revision 1)
Implementation
Data are extracted from the CPRD 'test' table using entity codes 175 (High density lipoprotein) and 288 (Other laboratory tests).

The 'type' column indicates the type of test: plasma, serum

The 'units' column indicates the units of the *original* measurement: 0 (unknown), 1 (mmol/L) and 2 (mg/dL)

Where the units were marked as 'mg/dL', the value has been converted to 'mmol/L' in the data table.
Codelist version
Codelist authors
Creation date
Category (code) Read code Read term CPRD Medcode
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