Regents Park Road Finchley Central London N3 1BQ |
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B e f o r e :
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LONDON BOROUGH OF HARINGEY |
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Q & ORS |
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291-299 Borough High Street, London SE1 1JG
Tel: 020 7269 0370
legal@ubiqus.com
MS J HAYFORD appeared on behalf of the Respondent Mother
MS S BRANSON appeared on behalf of the Respondent Father
MR N HOWARTH (Solicitor) appeared on behalf of the Child through their Guardian
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Crown Copyright ©
HHJ OLIVER JONES:
The evidence
The witnesses
"Living in a household where a parent or carer misuses substances does not mean a child will experience abuse, but it does make it more difficult for parents to provide safe and loving care. This can lead to abuse or neglect".
The threshold criteria
Joe's welfare
a. cocaine was 9.78, 8.58, and 6.34;
b. benzoylecgonine was 6.16, 4.2, and 1.58;
c. norcocaine, went up and then down again, with the results of 0.018, 0.030, and 0.019.
d. Also detected in this sample was anhydroecgonine methylester, which is the specific marker associated with crack cocaine. That was detected in two of the samples at 0.21 and 0.10. The last was below the cut-off level.
e. Also, the test was undertaken for cocaethylene, which is associated with alcohol and cocaine being consumed at the same time, but that was not detected.
"Due to concentration detected within the wash compared to within the sample, external and environmental contamination cannot be excluded as a potential contributor to the level of drugs detected in the sample itself. However, external contamination is unlikely to be the sole reason for the detected drugs in the sample itself".
DNA Legal then provided answers to questions dated 12 September 2022.
"In my opinion, the presence of cocaine in the nail sample is most likely due to the use of the drug at an earlier time than the period represented by the nail sample. However, due to the fact that the nail analysis is performed as an integrated average, it is not possible to determine if some drug use took place during the earlier period 1-2 months within the period of time covered by the nail sample. If there had been more recent use of the drug, I would have expected a higher level to have been detected, in addition to cocaine's main metabolite, benzoylecgonine".
1. For alcohol, PEth is the most accurate form of testing albeit it is more limited in time.
2. The father's alcohol results are in line with social drinking.
3. The elevated EtG result for April to June 2022 is the only evidence suggested of chronic excessive use of alcohol by the father.
4. You have to be careful about any test results taken in isolation: they have to be looked at in the context of all the other evidence.
5. Individuals with darker hair have a higher melanin content which more readily combines with EtG. However, the impact of these differences cannot be accurately measured, and the impact on hair strand testing is not known.
6. There is a research paper that presents the hypothesis that the heat treatment of darker hair may result in elevated EtG levels being detected. I pause to comment that the father's hair was heat treated as part of the dreadlocking process.
7. EtG on the hair is only mildly affected by sweat.
8. The absence of FAEE detection does not invalidate the detection of EtG because EtG is a superior marker, and FAEE is a very unstable marker which can be easily affected by washing, hair products, or combing out. However, you would have greater confidence if both markers were elevated. I pause to note that the father's hair rarely undergoes washing, and it certainly does not undergo combing out because of the dreadlocks.
9. Nail testing for EtG is a robust marker derived from EtG in the blood after the consumption of alcohol, and it is not affected by hair products or treatments.
10. If there is concern about the possibility that an alcohol hair test has derived a false positive from treatment, a fingernail test is advisable.
11. Fingernail tests are as accurate as hair tests for drugs, but hair is more porous than fingernail and so more vulnerable to external factors.
12. There are controlled studies from the United States that suggest that drug metabolites bind more readily to melanin, thus darker hair can show higher results than blonde hair for the same quantity of drug consumed.
13. The cut-off levels used in hair testing are based on a wide range of population and hair types.
14. The "high", "medium", and "low" indicators are comparing that individual result with the laboratory's internal library of results: the lowest 25% of results tested is described as "low"; 25-75% is described as "medium"; and 75% and above is described as "high". It is not comparable with other laboratories as they reference their own library of data rather than there being shared information between laboratories.
15. There is no dosage relationship between the ranges indicated and the doses of substances ingested. The extent to which a drug or its metabolites are incorporated into hair can differ between individuals.
16. Research shows that Afro-Caribbean hair tends to grow at slower rates compared to Caucasian hair, but nail growth rates are approximately the same for those groups.
17. In Afro-Caribbean hair, there is a slightly increased proportion of the hair in the telogen, or resting phrase, when compared to other groups.
18. Ms Reed was unable to answer, and was unaware of any studies that could answer the Court's question that if hair grows at half the normal rate, would a 1cm sample show a greater concentration because it is testing two months' worth of consumption of drugs, but analysing it on the basis that it was only one months' worth?
19. There is research that shows that the use of thermal hair straightening can result in elevated detected levels for AEME, the marker for crack cocaine, but that there would have to be crack cocaine present in the hair to start with, but heat treatment does not transform other markers for cocaine into AEME.
"Father is more than able to meet the basic needs of Kate. During my assessment I have observed no concerns for Kate's welfare or have had any safeguarding concerns for her. She is a happy child who is more than able to express her feelings and wishes, and she has been open about her relationship with her father, and states that it is excellent, that she loves him, and she feels well taken care of".
"There was observed to be a good interaction between Kate and her father, where there is a loving, strong relationship, and positive bond".