Sweat test
A test used in the diagnosis of cystic fibrosis.
| Tube | Small sealable containers provided in the Macroduct Advanced Supply kit |
|---|---|
| ID | 29992 |
| Availability | Weekdays |
| Additional Information | For babies less than 6 weeks old it may be more appropriate to request a blood spot IRT and DNA analysis as such babies may not sweat adequately. Sweat tests can be unreliable in acutely ill patients and will only be carried out on wards in exceptional circumstances. |
| Turn Around | 2 days |
| Send to | Specialist Laboratory Medicine Block 46 St James hospital Beckett Street Leeds LS9 7TF |
| Collection Con | Minimum volume: 15 µL or mg for a 25 minute collection, or 18 µL or mg for a 30 minute collection. Instructions for lab: Send to Block 46. Samples may be transported to the laboratory at room temperature if they are to be analysed within 24 hours of being taken. If this is not possible, they may be stored at 4°C and analysed within 72 hours. Please discuss with Biochemical Genetics lab prior to rejecting any samples. |
| Frequency | As required |
| Sample REQ | Sweat. Sweat tests are carried out at the CF Unit based at the LGI. Appointments can be made via the CF unit reception (0113 3927125). |
| Ref. Range Notes | <6 months: Normal <30, Equivocal 30-60, Abnormal >60. >6 months: Normal <40, Equivocal 40-60, Abnormal >60. |
| Units | mmol/L |
| Telepath | Sweat test: SWT2J |
