Test Details

Mnemonic

FATAF

Ordering Code

3502770

CPT-4 Code(s)

82725

Specimen Information

Patient Preparation

Overnight fasting prior to collection is preferred.

Collect

Red top

Specimen Preparation

Centrifuge, separate serum from cells within 1 hour and send 1.0 mL serum frozen in a screw capped plastic vial.

Alternate Specimen

Serum: Serum separator tube (SST)
Plasma: EDTA, ACD B

Minimum Volume

0.3 mL

Transport Temperature

Frozen

Rejection Criteria

Heparinized plasma.
Patients on heparin therapy

Stability

Room temperature: Unacceptable
Refrigerated: 2 hours
Frozen: 30 days

Methodology

Spectrophotometry-Enymatic
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Reference Range

Newborns: <2.3 mmol/L
1 - 12 months: 0.50 - 1.60 mmol/L
1 - 7 years: 0.60 - 1.50 mmol/L
8 - 17 years: 0.20 - 1.10 mmol/L
Adults: 0.07 - 0.88 mmol/L
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Performing Laboratory

Quest SJC
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