Request / Find a Test Tool

The National Genomic Test Directories specify which genomic tests are commissioned by the NHS in England, to be delivered by Genomic Laboratory Hubs.

This tool allows clinical teams to search all of the genomic tests available to patients through the National Testing Directory. From here you can find out more details about each test and information about how to order them. These tests can only be ordered by clinical teams, if you are a patient looking to request a test please speak to your clinical team directly.

Cystic fibrosis diagnostic test

Clinical Indication ID & Name

R184

Cystic fibrosis diagnostic test

Test Group

Core

Test code

R184.1

Test name

N/A

Target genes

CFTR

Test scope

n/a

Test method/ technology

Targeted mutation testing

Optimal Family Structure

n/a

Eligibility Criteria

Test in an individual clinically likely to be affected with cystic fibrosis:
1. Child with clinical suspicion of CF (e.g. recurrent chest infections, failure to thrive, fat malabsorption, neonatal history of meconium ileus), AND
a. A not normal sweat test performed in a recognised experienced test centre/laboratory (i.e. sweat chloride ≥30mM with sufficient sweat obtained), OR
b. An additional urgent prenatal situation for the parents or for a close relative, but urgent sweat
testing not accessible
2. Adult with CT-proven bronchiectasis, AND
a. A not normal sweat test performed in a recognised experienced test centre/laboratory (i.e. sweat chloride ≥30mM with sufficient sweat obtained), OR
b. Chronic suppurative chest infection with colonisation by Pseudomonas and Staph aureus, OR
c. Additional exocrine pancreatic dysfunction
3. Idiopathic chronic pancreatitis with exocrine dysfunction (fat malabsorption) with other obvious and acquired causes excluded, AND
a. A not normal sweat test performed in a recognised experienced test centre/laboratory (i.e. sweat chloride ≥30mM with sufficient sweat obtained), OR
b. Sweat testing not practical, and all other causes excluded
4. Male infertility associated with obstructive azoospermia, AND
a. CBAVD (or isolated CUAVD) diagnosed from expert clinical examination, OR
b. CBAVD identified at incidental herniotomy
5. Fetal echogenic bowel as bright as bone on 2nd trimester scan, AND
a. Both parents not available for carrier testing [if both parents are available, Cystic fibrosis carrier
testing should be used instead of an invasive prenatal test], AND
b. Isolated anomaly or <2 other common fetal markers, AND c. Other more common causes excluded (e.g. IUGR, placental failure, earlier bleeding, infection, raised aneuploidy markers) 6. Dilated fetal bowel on 2nd trimester scan

Test code

R184.2

Test name

N/A

Target genes

CFTR

Test scope

n/a

Test method/ technology

Single gene sequencing >=10 amplicons

Optimal Family Structure

n/a

Eligibility Criteria

Test in an individual clinically likely to be affected with cystic fibrosis:
1. Child with clinical suspicion of CF (e.g. recurrent chest infections, failure to thrive, fat malabsorption, neonatal history of meconium ileus), AND
a. A not normal sweat test performed in a recognised experienced test centre/laboratory (i.e. sweat chloride ≥30mM with sufficient sweat obtained), OR
b. An additional urgent prenatal situation for the parents or for a close relative, but urgent sweat
testing not accessible
2. Adult with CT-proven bronchiectasis, AND
a. A not normal sweat test performed in a recognised experienced test centre/laboratory (i.e. sweat chloride ≥30mM with sufficient sweat obtained), OR
b. Chronic suppurative chest infection with colonisation by Pseudomonas and Staph aureus, OR
c. Additional exocrine pancreatic dysfunction
3. Idiopathic chronic pancreatitis with exocrine dysfunction (fat malabsorption) with other obvious and acquired causes excluded, AND
a. A not normal sweat test performed in a recognised experienced test centre/laboratory (i.e. sweat chloride ≥30mM with sufficient sweat obtained), OR
b. Sweat testing not practical, and all other causes excluded
4. Male infertility associated with obstructive azoospermia, AND
a. CBAVD (or isolated CUAVD) diagnosed from expert clinical examination, OR
b. CBAVD identified at incidental herniotomy
5. Fetal echogenic bowel as bright as bone on 2nd trimester scan, AND
a. Both parents not available for carrier testing [if both parents are available, Cystic fibrosis carrier
testing should be used instead of an invasive prenatal test], AND
b. Isolated anomaly or <2 other common fetal markers, AND c. Other more common causes excluded (e.g. IUGR, placental failure, earlier bleeding, infection, raised aneuploidy markers) 6. Dilated fetal bowel on 2nd trimester scan

Test code

R184.3

Test name

N/A

Target genes

CFTR

Test scope

n/a

Test method/ technology

MLPA or equivalent

Optimal Family Structure

n/a

Eligibility Criteria

n/a

Commissioning group

Core

Overlapping idications

n/a

Address for samples/request forms

North Thames GLH, Rare & Inherited Disease Genomic Laboratory
Specimen Reception, Level 5 Barclay House, 37 Queen Square,
London WC1N 3BH

Contact with queries

gos-tr.norththamesgenomics@nhs.net

Supporting documents

n/a

Education resources

n/a

Service updates

n/a

Request form download

Consent record

See consent guidance in test request form

Sample requirements

See sample guidance in test request form