Serum Free Light Chains, Quantitative
Includes: Free Kappa Light Chains, Free Lambda Light Chains, and Kappa/Lambda Free Light Chains Ratio
Tube Type
| Test ID |
LAB735 |
| EPIC Name |
SERUM FREE LIGHT CHAINS |
| CPT Code(s) |
83521x2 |
| Group/Individual Test |
Group |
| Laboratory |
Special Chemistry Laboratory |
| Tube Station |
30 |
| Specimen |
Routine: |
5 mL whole blood/Navy blue plain tube/Gold SST tube or Red plain tube as acceptable |
| Micro: |
2.5 mL blood/3 Gold SST microtainers/Red plain microtainer also acceptable |
Stability
|
Unspun: |
4 hrs |
| Room Temperature: |
Not Acceptable |
| 2-8°C: |
21 days |
| Frozen -20°C: |
up to 1 month |
| Off Site Collections: |
Centrifuge sample; Aliquot Serum (min vol 750µl serum) & refrigerate within 4 hours of collection. |
| Availability |
Routine: |
Performed 3 days/week, Monday, Wednesday, Friday, no weekends, no holidays; Not available STAT |
| Turnaround Time |
3 Days |
| Reference Range |
Normal: |
| Free Kappa Light Chains |
0.33 - 1.94 mg/dL |
| Free Lambda Light Chains |
0.57 - 2.63 mg/dL |
| Kappa/Lambda Ratio |
0.26 - 1.65 |
|
| Comments |
- Tumor marker assays cannot be used interchangeably; therefore, the same method should be used to serially monitor patients.
- The instrument used is The Binding Site Optilite® Optimised Protein System. The Optilite Freelite Kappa Free Lambda Free assays use turbidimetric methodology.
- Multiple test requests with the same sample type will require additional volumes for testing
- Pediatric microtainer devices available from Phlebotomy Services
|
