Fatty Acid Profile, Essential, Serum
| Abbrev Code: | FAPE | ||
| Order Code: | LAB5838 | Order Name: | Fatty Acid Essential Test |
| Synonyms: | C12-C22, Fatty Acid Profile | ||
| Methodology: | Gas chromatography/Mass spectrometry/Stable isotope dilution analysis | ||
| CPT Codes: | 82542 x1 | ||
| Turnaround Time: | Specimens are sent to the reference laboratory Mon-Fri; results are reported within 4-6 days. | ||
| Special Instructions: | Provide patient age on the request form. Include information regarding treatment, family history and tentative diagnosis. For nutritional assessment, a 12 to 14 hour fast is required; however, infants or persons suspected of having a fatty acid oxidation disorder should not fast before testing owing to the possibility of acute metabolic decompensation. Instead, collect the specimen after the longest fast possible, just before feeding. | ||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 1 mL |
| Minimum\Peds Volume: | 0.5 mL |
| Container: | Red or gold (gel) Alternate Containers: Red (no gel) |
| Patient Preparation: | Patient must fast overnight (12-14 hours). Patient must not consume any alcohol within 24 hours prior to sample collection. |
| Causes for Rejection: | Grossly lipemic specimen |
Processing and Shipping
| Specimen Processing: | Separate serum from cells within 45 minutes of collection. Centrifuge and aliquot 0.5 mL, 0.15 mL minimum. Samples are stable refrigerated for 72 hours or frozen for 92 days |
| Shipping Instructions: | Ship on dry ice. |
| Stability: | 72 hours refrigerated; 92 days frozen. |
| Test Performed at or Referral Lab | Lab Sendouts (Mayo) |
| Referral Lab number: | FAPEP |
Interpretive
| Reference Range: |
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