Cystic Fibrosis Cis-Trans (CFTR) R117H and 5T Mutations
0056006
Ordering Recommendation
•Order only if individual is positive for both the R117H mutation and 5T variant.
•Determines if R117H and 5T are on the same chromosome.
Mnemonic
CFCIS-TRAN
Methodology
Polymerase Chain Reaction/Oligonucleotide Ligation
Performed
Mon, Wed, Fri
Reported
8-12 days  
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
  
Collect
Lavender (EDTA), pink (K2EDTA), or yellow (ACD Solution A or B).  
Specimen Preparation
Transport 3 mL whole blood. (Min: 1 mL)  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
  
Remarks
  
Stability
Ambient: 72 hours; Refrigerated: 5 days; Frozen: Unacceptable  
Reference Interval
By report  
Interpretive Data
The sample is tested to determine the cis-trans status of p.Arg117His (c.350G>A) and the IVS-8 5T variant (c.1210-12T[5_9]) in the CFTR gene by allele-specific long range polymerase chain reaction (PCR) and oligonucleotide ligation assay (OLA).
Sensitivity and specificity for detection of these mutations are 99 percent. Counseling and informed consent are recommended for genetic testing. Consent forms are available online at www.aruplab.com.





See Compliance Statement C: www.aruplab.com/CS
Statement C: The performance characteristics of this test were validated by ARUP Laboratories. The U.S. Food and Drug Administration (FDA) has not approved or cleared this test; however, FDA approval or clearance is currently not required for clinical use of this test. The results are not intended to be used as the sole means for clinical diagnosis or patient management decisions. ARUP is authorized under Clinical Laboratory Improvement Amendments (CLIA) and by all states to perform high-complexity testing.

Counseling and informed consent are recommended for genetic testing. Consent forms are available online.
 
Note
Must note on the patient history form whether the test is to rule out affected status or carrier status. Risk assessment is dependent on this information.
CPT Code(s)
81479
Components
Component Test Code*Component Chart Name
0051151Cystic Fibrosis Symptom
0056006Cystic Fibrosis (CFTR) Cis-Trans Interp
2001363Cystic Fibrosis (CFTR) Cis-Trans Spec
* 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.
Aliases
  • CFTR R117H and 5T mutations