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Triglycerides, serum

Item Value
Clinical Questions Does my patient have hemophagocytic lymphohistiocytosis?
Approval req'd? No
Available Stat? No
Test code TRIG
Test group Triglycerides
Performed by Parnassus, Mission Bay & Mt. Zion Chemistry
In House Availability Test available 24 hours per day 7 days per week
Method Spectrophotometric (glycerophosphate oxidase)
Patient Preparation A 9-12 hour fast prior to sample collection is required.
Container type Gold top or Light Green top
Amount to Collect 1 mL blood Click here for Microdetermination info
Sample type Serum or plasma
Preferred volume 0.5 mL serum or plasma
Min. Volume 0.2 mL serum or plasma Click here for Microdetermination info
Units mg/dL
Normal range
Desirable < 150 mg/dL
Borderline high 150-199 mg/dL
High 200-499 mg/dL
Very high ≥ 500 mg/dL

Risk classification is according to NCEP-ATPIII guidelines (JAMA 2001;285:2486)
Critical value None, See additional information
Stability Room temperature 8 hours, refrigerated 2 days, frozen at -20C 1 week
Turn around times 4 hours
Additional information To convert mg/dL to mmol/L (SI units) multiply by 0.0113.

Increased levels of bilirubin may artifactually decrease the result.

Patients with levels > 1000 mg/dL (> 11.3 mmol/L) are prone to develop pancreatitis. Values above 2000 mg/dL will be phoned the same day Monday-Friday 0800-1500 or next weekday.

The sera of patients with triglycerides > 1000 mg/dL are lipemic and at high levels will artifactually lower the assay results for many water-soluble constituents, e.g., electrolytes. A mathematical correction can be applied to electrolyte measurements to obtain the true value (Steffes MW, Freier EF: J Lab Clin Med 1976;88:683):

Corrected value = (0.994 + [0.00021 x Trig conc]) x measured analyte conc.
CPT coding 84478
LOINC code 2571-8
Last Updated 6/21/2016 12:09:07
Entry Number 951
Lab Procedure Link Click here for Procedure
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