Krebs von den Lungen-6
Ordering Recommendation

May aid in the evaluation of lung inflammation or injury in various types of ILD.

KL 6
Quantitative Immunoturbidimetric
1-8 days
New York DOH Approval Status
Specimens from New York clients will be sent out to a New York DOH approved laboratory, if possible.
Submit With Order
ARUP Consult®
Disease Topics
Specimen Required
Patient Preparation
Plain Red 
Specimen Preparation
Allow specimen to clot completely at room temperature. Separate from cells ASAP or within 2 hours of collection. Transfer 1.5 mL serum to ARUP Standard Transport Tube. (Min: 0.5 mL) 
Storage/Transport Temperature
Unacceptable Conditions
Hemolyzed, hyperlipemic, icteric, heat-treated or contaminated. 
Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 month 
Reference Interval
0-500 U/mL
Interpretive Data
Krebs von den Lungen-6 (KL-6) may be an indicator of lung inflammation or damage. Elevated levels are associated with various types of interstitial lung diseases (ILD).

Abnormal KL-6 results should be interpreted in the appropriate clinical context. A negative result does not rule out ILD.

Compliance Statement D: For laboratory tests using a manufactured RUO kit. This test was developed and its performance characteristics determined by ARUP Laboratories. The U. S. Food and Drug Administration has not approved or cleared this test; however, FDA clearance or approval is not currently required for clinical use. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions.

Samples with results greater than 10,000 U/mL will be diluted to the maximum reportable range (>40,000 U/mL).
Hotline History
View Hotline History
Component Test Code*Component Chart NameLOINC
3001867Krebs von den Lungen-6
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
  • KL 6
  • KL6