Details of Element: Triglycerides-Grc (Mg)
Component of Medical Laboratory

Unique Name: trimg
Contained in the Common BLSA Data Set ? Yes

Data Points (as of 09/06/98) Males Females Total
Number of Data Points 5301 1588 6889
Number of Distinct Participants 1353 573 1926
Year First Collected 1959 1978 -
Year Last Collected 1992 1992 -

Type of Variable: Absolute Measure
Encoding: Continuous
Units of Measure: MG?DL
Precision: ###.
Anticipated Range: 000. thru 280.
Masterfile Index: 002-01-60
Related Data Elements: trimg0 , trutr , ccxtr
Specific to this Data Element:
    Descriptive history:
    Triglycerides have been measured continuously since 1959. During this time, different methods and different laboratories have provided the triglyceride values. triglyceride-grc' refers to measurements made at the GRC (see description of triglyceride -bs' -- file 002, card 2 & true triglyceride' -- file 002, card 4 & ccx triglyceride' -- file 002, card 4). A brief chronology of the triglyceride-grc' measurement follows:

    Dates Sample Type Method
    1959 - 1982 serum Blankenhorn
    1983 - 1987 serum Abbott
    1987 - 1992 plasma Abbott

    N.B. -- #1.) from 1983 to 1992 the triglyceride values did not have a free glycerol adjustment (reagent for free glycerol assay was not always available). See true triglyceride' variable for free glycerol corrected value. #2.) from 1991 to the present, triglyceride measurements have been measured in plasma using Abbott-CCX analyzer (see ccx triglyceride'-- file 002, card4)

    Triglyceride measurements made from different sample types and methodologies are not equivalent. The triglyceride-grc' values in this file are entered as is. Longitudinal and cross-sectional analyses made over time periods where changes occurred in the methodology require adjustment to achieve equivalency (for more information please contact investigators).

    Data collection methodology:
    Blood chemistry.

    Related protocols:
    Other blood chemistries.

    Investigators:
    Dr. Reubin Andres (primary investigator)
    GRC Box-24
    andresr@grc.nia.nih.gov
    (410)-558-8194

    Frequency of data collection:
    Every visit.

    Inclusion/exclusion rules:
    None.

    Publications using these data:
  • Hallfrisch, J., Singh, V.N., Muller, D.C., Baldwin, H., Bannon, M.E., Andres, R. High plasma vitamin C associated with high plasma HDL- and HDL2 cholesterol. Am J Clin Nutr. 60(1): 100-5,1994.
Details for this Data Type
JM - Disclaimer

Revised 09/18/98 -- Send comments to our Web Master .