Test Overview
Test Methodology

Enzymatic Colorimetric

Test Usage

Evaluation of metabolic status of persons with endocrinopathies. Detection of pheochromocytoma and of glucagon, thyrotropin-, and adrenocorticotropin-secreting tumors. Monitoring of control of diabetes mellitus.

Reference Range *

< 0.73 mmol/L
Reference values have not been established for patients who are <18 years of age.

Test Details
Days Set Up
Monday - Friday
Analytic Time

2 - 4 days

Soft Order Code
FFA
MiChart Code
Fatty Acids, Free
Synonyms
  • Fatty Acids, Nonesterified
  • Nonesterified Fatty Acids (NEFA)
  • Free Fatty Acids (FFA), Total
  • FFA
  • Free Fatty Acids, Total, S
Laboratory
Sendout
Reference Laboratory
Mayo NEFA (8280)
Section
Special Testing
Specimen Requirements
Collection

Collect specimen in red top or SST tube from a fasting patient (12 - 14 hour fast). Centrifuge within 45 minutes of collection, aliquot serum into a plastic tube and freeze. Patient must not consume alcohol for 24 hours before collection of specimen.

Yellow Top Tube
Special Handling

Fasting specimen. Must arrive in lab or aliquot and freeze within 45 minutes.

Normal Volume
1 mL serum
Minimum Volume
0.5 mL serum
Additional Information

Test sent to Mayo Medical Laboratories.

Billing
CPT Code
82725
Fee Code
22111
NY State Approved
No