Skip to content

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Find out more here. Hide this message

Laboratory Medicine

Test Directory / Phenylalanine/ Tyrosine

Phenylalanine/ Tyrosine

Lithium Heparin

TestPhenylalanine/ Tyrosine
Common AbbreviationsPHE TYR
ProfileNA
Tube type Lithium Heparin
Clinical IndicationMonitoring of patients with phenylketonuria.
Specimen TypeBlood
Sample typePlasma
Minimum Volume0.2mL
Special PrecautionsNo special requirements
StabilityContact Referral Laboratory
Turnaround Time7 days
LaboratorySt James's University Hospital Beckett Street Leeds LS9 7TF 0113 206 5806
Reference IntervalContact Referral Laboratory
LimitationsContact Referral Laboratory
Notes
York Hospital's car park.

Getting here

Chinese Poland

View all languages >

Resident doctor strike action

Resident doctors will be taking strike action from 7am on 17 December to 7am on 22 December. Some appointments and procedures may be affected. If your appointment needs to be changed, we will contact you.

If you've not heard from us, please attend your appointment as planned.

Please continue to come forward for care, particularly in an emergency or life-threatening situation. Use NHS 111 to find the most appropriate service for your needs.