Can hospital blood test results be used as evidence in a drink driving case?
Yes. Under section 7A of the Road Traffic Act 1988, police can request that a blood sample taken for medical purposes at hospital be tested for alcohol. However, the sample must be taken by a medical practitioner, the driver must be told that the sample may be used for prosecution, and the police must follow PACE Code D procedures. If any of those steps were skipped, the evidence may be excluded at court.
Do I have to consent to a blood test at hospital after an accident?
The police must ask for your consent before requesting that a hospital blood sample be tested for alcohol. If you were unconscious or unable to consent at the time the blood was drawn, the sample can still be taken for medical purposes, but it cannot automatically be used as prosecution evidence without following the correct procedures. A solicitor can check whether the consent process was properly followed in your case.
What is the hip flask defence in hospital drink driving cases?
The hip flask defence (also called back calculation) argues that your blood-alcohol level was below the legal limit at the time of driving, and only rose above it between the time you stopped driving and the time the blood sample was taken. This defence is common in hospital cases because there can be a long gap between the accident and the blood draw. An expert toxicologist calculates the rate of alcohol absorption to show the reading at the time of driving was lower than the hospital result.
How long after an accident can police take a blood sample?
There is no fixed statutory time limit for taking a blood sample after an accident. However, the longer the delay between driving and the blood draw, the weaker the prosecution evidence becomes. Delays of several hours give the defence stronger grounds for a back calculation argument, because alcohol levels change over time. The prosecution must prove the reading at the time of driving, not at the time of the sample.
What PACE procedures apply to hospital blood samples in drink driving cases?
The police must follow PACE Code D when dealing with hospital blood samples. This means the sample must be properly labelled, sealed, and stored. The driver must be informed that the sample may be used in prosecution. A portion of the sample must be offered to the driver for independent analysis. Chain of custody records must be maintained from the hospital to the laboratory. Any break in this chain, or any failure to follow these steps, can make the blood evidence inadmissible.