It appears that the saliva and blood sample were sent from Leics to the Lab for use as a comparison to any samples found in 5a, car etc.
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I have a degree in Sciences in the areas of Microbiology and Biochemistry. I am a Chartered Biologist, a member of the Institute of Biology, a forensic doctor enrolled in the Order and a forensic scientist in the Birmingham Laboratory of the Forensic Science Service. My area of speciality is the examination of biological evidence including the analysis of spots of body fluid and the interpretation of DNA profile results.
Information
Based on the information furnished by the Leicestershire Constabulary and the Policia Judiciaria, I was informed that, allegedly, on 3 May 2007 Madeleine McCann disappeared from apartment 5A, Ocean Club, na Praia da Luz, Lagos, Portugal.
My examinations, interpretations and conclusions are in line with the statements of information available during the examination. In the event there are alterations relating to that information, I shall have to reconsider the conclusions that I drew in the light of the new circumstances. Additional information will have to be furnished prior to any trial.
Receipt of the objects
Some of the objects that were collected from apartment 5A and from a vehicle, Renault 'Scenic' (registration 59-DA-27), hired by Gerry and Kate McCann when they were in Portugal. Those objects were delivered to the Forensic Science Service(R) by the Police Science Laboratory.
At the same time, reference samples from those Portuguese police officers who had been active in the crime scene were delivered.
The Forensic Science Service(R) received the objects on 7 August 2007, in sealed, secure packages.
On 8 August 2007, the Forensic Science Service(R) received a piece of cloth/cotton wool (object MJN994) from Leicestershire Constabulary. That object was inside a sealed package.
On 12 October 2007, the Forensic Science Service(R) received a blood spot in a cardboard frame (object JRB/1) from Leicestershire Constabulary. That object was inside a sealed package.
Objective
Th objective of the laboratory examination was to examine the presented objects with respect to the presence of blood, cellular material and hair that may prove to have been from Madeleine McCann or one or other member of her family, or from any of the Portuguese police who had been active at the crime scene.
Technical questions
Establishment of the DNA profile
In this case two types of DNA analysis were used: the standard technique called SGM+ and a more precise one called Low Copy Number (LCN).
http://www.mccannfiles.com/id268.html