Alberta Precision Laboratories

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Organization:

Alberta Precision Laboratories

Message Alert:

PLEASE NOTE: This Test Directory is in an interim state and due to changes pertaining to the DynaLIFE transition, performing site for routing has not been updated. Please refer to Laboratory Information System for appropriate routing.

Test Name/Synonym:

Chloride, Sweat (Synonyms: Cystic Fibrosis, Sweat Test, CL)

Clinical Indications:

To aid in the diagnosis of Cystic Fibrosis.

Ordering Alert:

Testing must be pre-booked. Collections available for both child and adult inpatients and outpatients.

Calgary:
To book collections: Email sweattestbooking@albertaprecisionlabs.ca.

Edmonton:
To book an Outpatient appointment,call Client Response at 780-407-7484.
To book an Inpatient appointment, call Special Chemistry at 780-407-8491.

Collection Alert:

No creams or ointments are to be applied to the patients skin 24 hours prior to sweat chloride testing.

Ensure the patient has plenty to drink starting 2 days prior to testing so that enough sweat is produced.

LABID (Connect Care):

LAB1726

Minimum Collection Volume:

15 uL

Test Resources:

General Laboratory Requisition – 21302

Method and Interpretation of Results:

Normal	0 – 29 mmol/L
Marginal Range	30 – 59 mmol/L
Values Consistent with Cystic Fibrosis	60 – 160 mmol/L

Testing Schedule:

Edmonton:
Outpatients: Monday, Wednesday & Thursday between 0930 – 1315.
Inpatients: Monday – Friday between 0800 - 1545
Calgary:
Tuesday & Wednesday only.

Reference Interval:

Less than 30 mmol/L

Testing Area:

Biochemistry

Performing Site:

Calgary Zone	Alberta Children’s Hospital
Edmonton Zone	University of Alberta Hospital

Additional Test Information:

This test takes approximately 45 minutes to 1 hour to complete. A gel patch is placed on the patient’s inner arm (or thigh or calf for newborns) which is attached to a machine that stimulates the sweat glands.

After 5 minutes, the gel is removed, the collection site is cleaned and the collection device is attached. Sweat is collected for 20 - 30 minutes. If not enough sweat is collected, the collection procedure may need to be repeated.

Edmonton Zone:
Outpatient testing is performed at the Edmonton Kaye Clinic Outpatient Laboratory and Inpatient testing is performed in Special Chemistry at University of Alberta Hospital.

Last Updated On:

Monday, February 12, 2024