Test Details
Mnemonic
LFFAT
Ordering Code
3434400
CPT-4 Code(s)
81596
Specimen Information
Patient Preparation
Overnight fasting preferred.
Collect
Serum separator tube (SST)
Specimen Preparation
Centrifuge, separate serum from cells within 15 - 30 minutes and send 3.5 mL serum in a screw capped plastic vial.
Alternate Specimen
Serum: Red top
Minimum Volume
2.0 mL
Transport Temperature
Frozen
Rejection Criteria
Gross lipemia or gross hemolysis, patients <2 years old, avoid freezing and thawing
Stability
Room temperature: 24 hours
Refrigerated: 72 hours
Frozen (-20°C): 5 days
Frozen (-70°C): 28 days
Refrigerated: 72 hours
Frozen (-20°C): 5 days
Frozen (-70°C): 28 days
Methodology
Nephelometry, Spectrophotometry (SP)
Reference Range
See report
Performing Laboratory
Quest
New York DOH Approval Status
Yes