Test Detail

Fatty Acids, Free (Nonester)

Test Code:

081893

Performing Lab: LABCORP BURLINGTON

CPT Code:

82725

Order Information
Results

Specimen Container	Red-top tube or gel-barrier tube
Specimen Type	Serum, FROZEN
Volume	1 mL
Minimum Volume	0.2 mL
Temperature	FREEZE. The level of NEFA will increase in serum as it is allowed to stand at room temperature due to enzymatic action.
Specimen Handling	After clotting, separate serum and FREEZE immediately following centrifugation. Serum is the specimen of choice. Heparin must not be used nor should the patient be on heparin therapy. The NEFA level in serum will increase as it remains at room temperature. Transfer specimen to a plastic transport tube before freezing. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.
Methodology	Spectrophotometry
Stability	Room Temperature: 4 hours, Refrigerated: 1 day, Frozen: 105 days Freeze/thaw cycles: Stable x6
Unacceptable Conditions	Heparin plasma received; specimen not frozen. NOTE: Heparin is known to stimulate the activity of lipoprotein lipase, which acts upon triglycerides associated with blood lipoproteins to release free or nonesterified fatty acids. For this reason, blood collected from patients receiving therapeutic heparin or blood collected in heparinized containers is not suitable for the NEFA test.
Days Set-Up	TU,TH
Shift Performed	1
TAT From Set-Up	3 - 6 Days

Result Code	Result Name	LOINC
081893	Fatty Acids, Free (Nonester)	15066-4