This private blood test measures the level of ammonia in your blood, used to help investigate confusion, liver disease or certain metabolic conditions. The test costs £123.13, plus a £50 blood-draw fee, with results usually available in 1 day.
You can walk in or book online at 117a Harley Street, seven days a week.
Written by Mr Stephen Lingam. Reviewed by Dr Mohammad Bakhtiar (GMC 4694470) on 28/09/2026.
It measures the level of ammonia in your blood, used to help investigate confusion, liver disease or certain metabolic conditions.
The test costs £123.13. A separate £50 blood-draw fee applies.
Results are usually available in 1 day.
No GP referral is needed. You can walk in or book online.