Cleveland HeartLab T, Test

CPT Code: 84478
Order Code: C119
ABN Requirement:  No
Synonyms: Trig; Tg
Specimen: Serum
Volume: 0.5 mL
Minimum Volume: 0.2 mL
Container: Gel-barrier tube (SST, Tiger Top)


  1. Collect and label sample according to standard protocols.
  2. Gently invert tube 5 times immediately after draw. DO NOT SHAKE.
  3. Allow blood to clot 30 minutes.
  4. Centrifuge for 10 minutes.

Fasting: Not Required.

Transport: Store serum at 2°C to 8°C after collection and ship the same day per packaging instructions provided with the Cleveland HeartLab shipping box.


Ambient (15-25°C): not acceptable
Refrigerated (2-8°C): 5 -7 days
Frozen (-20°C): 3 months
Deep Frozen (-70°C): >3 months

Causes of Rejection: Specimens other than serum; improper labeling; samples not stored properly; samples older than stability limits

Methodology: Enzymatic colorimetric test

Turn Around Time: 1 to 3 days

Relative risk:

Age Low Risk
Moderate Risk
High Risk
<10 years <75 N/A ≥75
10-19 years <90 N/A ≥90
≥20 years <150 150-199 ≥200


Clinical Significance: A triglyceride test, along with other lipid tests, is used to determine cardiovascular risk in individuals including those with evident cardiovascular disease, known risk factors, a family history of cardiovascular disease, diabetes, kidney disease, hypertension, or those who smoke. Triglyceride testing is also used for the evaluation of hyper- or hypolipidemia.

Limitations: Endogenous unesterified glycerol in the sample will falsely elevate triglyceride values. Ascorbic acid and calcium dobesilate cause artificially low triglyceride values. Intralipid is directly measured as analyte in the assay and leads to high triglyceride results. Acetaminophen use can falsely decrease test results.

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.