scholarly journals Implementation of Mathematical Models to Predict New Cannabis Use by Urine Drug Testing: It Is Time to Move Forward

Author(s):  
Torben Breindahl ◽  
Andreas Kimergård ◽  
Peter D C Leutscher ◽  
Peter Hindersson
2005 ◽  
Vol 10 (suppl a) ◽  
pp. 38A-43A ◽  
Author(s):  
Douglas Gourlay

The adequate cotreatment of chronic pain and addiction disorders is a complex and challenging problem for health care professionals. There is great potential for cannabinoids in the treatment of pain; however, the increasing prevalence of recreational cannabis use has led to a considerable increase in the number of people seeking treatment for cannabis use disorders. Evidence that cannabis abuse liability is higher than previously thought suggests that individuals with a history of substance abuse may be at an increased risk after taking cannabinoids, even for medicinal purposes. Smoked cannabis is significantly more reinforcing than other cannabinoid administration methods. In addition, it is clear that the smoked route of cannabis delivery is associated with a number of adverse health consequences. Thus, there is a need for pharmaceutical-grade products of known purity and concentration using delivery systems optimized for safety. Another factor that needs to be considered when assessing the practicality of prescribing medicinal cannabinoids is the difficulty in differentiating illicit from prescribed cannabinoids in urine drug testing. Overall, a thorough assessment of the risk/benefit profile of cannabinoids as they relate to a patient’s substance abuse history is suggested.


1988 ◽  
Vol 34 (3) ◽  
pp. 471-473 ◽  
Author(s):  
M A Peat

Abstract Many laboratories are now performing urine drug testing for employers, governmental agencies, and other institutions. It is now recognized that presumptive positive screening results have to be confirmed by an analytical procedure based on a different chemical technique with greater than or equal sensitivity to the screening test. Thin-layer chromatography has been widely used for this; however, it is relatively insensitive for certain drugs, and it cannot satisfy the accuracy and precision requirements needed to determine threshold concentrations reliably. Gas chromatography-mass spectrometry is able to satisfy these threshold requirements and has become the method of choice for confirming initial immunoassay results.


2017 ◽  
Vol 52 (8) ◽  
pp. 497-506 ◽  
Author(s):  
N. N. Stephanson ◽  
P. Signell ◽  
A. Helander ◽  
O. Beck

2008 ◽  
Vol 43 (3-4) ◽  
pp. 513-520 ◽  
Author(s):  
Nouzar Nakhaee ◽  
Kouros Divsalar ◽  
Manzume Shamsi Meimandi ◽  
Shahriar Dabiri

1987 ◽  
Vol 11 (5) ◽  
pp. 215-218 ◽  
Author(s):  
Berndt-Ingo Podkowik ◽  
Michael L. Smith ◽  
Robert O. Pick

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