What the requisition is for
The requisition orders LifeLabs’ blood biomarkers for Alzheimer’s disease in BC. The combined ABeta 42/40 and p-tau217 evaluation includes both the beta-amyloid 42/40 ratio and p-tau217, which can also be ordered alone. The form also lists ApoE isoform, p-tau181, neurofilament light chain and GFAP. LifeLabs describes the amyloid and tau tests as intended for adults with mild cognitive impairment or dementia, alongside a clinical assessment. LifeLabs offers genetic counselling support with ApoE testing.
Who completes it
An authorized ordering healthcare practitioner completes and signs the form. Patient demographics, your details and the test boxes are the only parts to fill in. Patient Service Centre staff complete the rest.
How to fill in the requisition
Patient and provider
Enter the patient’s name, date of birth, sex, address, phone and Personal Health Number. The bill-to line is already set to patient, private pay. Add your name, address and number, and any copy-to practitioner.
Tests
Tick only the tests you want. If you tick the combined evaluation, don’t tick its two parts separately, since both are included. Use the diagnosis and comments line for the clinical context, such as the cognitive assessment that prompted testing.
Biotin and collection
For the tests marked with an asterisk, tell the patient to stop biotin at least 72 hours before the sample. The patient has to attend a LifeLabs Patient Service Centre in person to give the sample.
Common reasons it’s delayed
- Other tests added to the form, which staff can’t accept.
- The patient took biotin within 72 hours of collection.
- Unsigned or undated requisition.
- The patient expects MSP to cover the cost.
Submitting and who pays
The patient takes the requisition to a LifeLabs Patient Service Centre and pays at collection. The form notes that samples may be sent to a lab outside BC. Results go to you, and you discuss them with the patient.