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The testing of salivation by the use of mercury was performed at least as early as 1685. [5] Testing the acidity of saliva occurred at least as early as 1808. [6] The clinical use of saliva testing occurred at least as early as 1836 in patients with bronchitis. [7]
A drug test (also often toxicology screen or tox screen) is a technical analysis of a biological specimen, for example urine, hair, blood, breath, sweat, or oral fluid/saliva—to determine the presence or absence of specified parent drugs or their metabolites.
A buccal swab, also known as buccal smear, is a way to collect DNA from the cells on the inside of a person's cheek. Buccal swabs are a relatively non-invasive way to collect DNA samples for testing .
Cannabis is detectable by saliva testing. Just like blood testing, saliva testing detects the presence of parent drugs and not their inactive metabolites. This results in a shorter window of detection for cannabis by saliva testing. [23] Delta 9 THC is the parent compound.
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The test analyzes the DNA of a patient to determine the genotype, after which predictions of the phenotype can then be made. The DNA sample comes from blood tests (as Roche suggests) or, alternatively, comes from a mouth brush called a buccal swab. The analysis has five steps after DNA is extracted from patient samples: PCR amplification of the ...
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