IMMUNOGLOBULIN FREE LIGHT CHAINS SERUM

General Information

HLAB/HOL Code: IGFLC
UPHSM LIS Test #: 8484
Schedule: N/A
Testing Time: N/A
Testing Lab: Labcorp

Specimen Info
Only 1 specimen type required, unless otherwise specified

Volume: 0.5 (0.2) mL
Temperature: Ambient/Refrigerated or Frozen
Tube Type: Serum (Plain Red top or Gel-Barrier)
Collection Info:
Special Instructions:  Values obtained with different assay methods should not be used interchangeably in serial testing.
It is recommended that only one assay method be used consistently to monitor each patient's course of therapy. This
procedure does not provide serial monitoring; it is intended for one-time use only.

Collection:  Separate serum immediately after coagulation (30 minutes) to prevent hemolysis.

Storage Instructions:  Stable at room temperature 25°C for seven days or refrigerated at 2°C to 8°C for four weeks;
longer when frozen at -20°C or lower.

Patient Preparation:  Patient should be fasting for eight hours to avoid lipemic sample interference.

Causes for Rejection:  Microbially-contaminated specimen; specimen containing particulate matter; lipemic or
hemolyzed specimens.

Methods

Immunologic

CPT Codes

83883x2

* The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding
is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Reference Range

Free κ light chains: 3.30-19.40 mg/L
Free λ light chains: 5.71-26.30 mg/L
κ:λ free light chain ratio: 0.26-1.65