Value domain attributes |
Representational attributes |
Representation class: | Total |
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Data type: | Number |
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Format: | N[N].N |
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Maximum character length: | 3 |
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Supplementary values: | Value | Meaning |
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99.9 | Not stated/inadequately described. |
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Unit of measure: | Millimole per litre (mmol/L) |
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Data element attributes |
Collection and usage attributes |
Guide for use: | Record the absolute result of the total triglyceride measurement. |
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Collection methods: | Measurement of lipid levels should be carried out by laboratories, or practices, which have been accredited to perform these tests by the National Association of Testing Authorities. - To be collected as a single venous blood sample, preferably following a 12-hour fast where only water and medications have been consumed.
Note that to calculate the low-density lipoprotein - cholesterol (LDL-C) from the Friedwald Equation (Friedwald et al, 1972): - a fasting level of plasma triglyceride and knowledge of the levels of plasma total cholesterol and high-density lipoprotein - cholesterol (HDL-C) is required,
- the Friedwald equation becomes unreliable when the plasma triglyceride exceeds 4.5 mmol/L, and
- that while levels are reliable for the first 24 hours after the onset of acute coronary syndromes, they may be unreliable for the subsequent 6 weeks after an event.
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Source and reference attributes |
Submitting organisation: | Cardiovascular Data Working Group |
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Relational attributes |
Related metadata references: | |
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Implementation in Data Set Specifications: | |
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