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HelpTest Code TSPU Targeted Stimulant Screen, Random, Urine
Additional Testing Requirements
In most cases, no additional testing is needed after the qualitative targeted stimulant test is performed if the parent drug or metabolites found are consistent with the patient's prescribed medications. However, if an unexpected stimulant is found, confirmatory testing can be requested at an additional charge.
Specimen Required
Supplies: Sarstedt Aliquot Tube 5 mL (T914)
Collection Container/Tube: Plastic urine container
Submission Container/Tube: Plastic, 5-mL tube
Specimen Volume: 1 mL
Collection Instructions:
1. Collect a random urine specimen.
2. No preservative
Useful For
Determining compliance or identifying illicit stimulant drug use
This test is not intended for employment-related testing.
Profile Information
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| LPPS | List prescribed stimulants | No | Yes |
| TSTIM | Targeted Stimulant Screen, U | No | Yes |
Method Name
Liquid Chromatography Tandem Mass Spectrometry, High-Resolution Accurate Mass (LC-MS/MS HRAM)
Reporting Name
Targeted Stimulant Screen, USpecimen Type
UrineSpecimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 14 days | |
| Frozen | 28 days |
Reject Due To
| Gross hemolysis | OK |
| Gross icterus | Reject |
Clinical Information
Stimulants are sympathomimetic amines that stimulate the central nervous system activity and, in part, suppress the appetite. Amphetamine and methamphetamine are also prescription drugs used in the treatment of narcolepsy and attention-deficit disorder/attention-deficit hyperactivity disorder (ADHD). Methylphenidate is another stimulant used to treat ADHD. Phentermine is indicated for the management of obesity. All other amphetamines (eg, methylenedioxymethamphetamine: MDMA) are Drug Enforcement Administration scheduled Class I compounds. Due to their stimulant effects, the drugs are commonly sold illicitly and abused. Physiological symptoms associated with very high amounts of ingested amphetamine or methamphetamine include elevated blood pressure, dilated pupils, hyperthermia, convulsions, and acute amphetamine psychosis.
Reference Values
Not detected
Cutoff concentrations:
Methamphetamine: 100 ng/mL
Amphetamines: 100 ng/mL
3,4-Methylenedioxymethamphetamine (MDMA): 100 ng/mL
3,4-Methylenedioxy-N-ethylamphetamine (MDEA): 100 ng/mL
3,4-Methylenedioxyamphetamine (MDA): 100 ng/mL
Ephedrine: 100 ng/mL
Pseudoephedrine: 100 ng/mL
Phentermine: 100 ng/mL
Phencyclidine (PCP): 20 ng/mL
Methylphenidate: 20 ng/mL
Ritalinic acid: 100 ng/mL
Interpretation
If a stimulant or its corresponding metabolite is identified (present), it indicates that the patient has used the respective stimulant in the recent past (typically 1-3 days). The absence of the expected stimulant or its metabolites may indicate noncompliance, inappropriate timing of specimen collection relative to drug administration, poor drug absorption, diluted or adulterated urine, or limitations of testing. The concentration of the drug must be greater than or equal to the cutoff to be reported as present. If a specific drug concentration is required, the laboratory must be contacted within 2 weeks of specimen collection/testing to request quantification by a second analytical technique at an additional charge.
Cautions
No significant cautionary statements
Method Description
The urine sample is diluted with internal standard and clinical laboratory reagent water and then analyzed by liquid chromatography tandem mass spectrometry using a high-resolution accurate mass orbitrap detector.(Unpublished Mayo method)
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
80326
G0480 (if appropriate)
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| TSPU | Targeted Stimulant Screen, U | 99107-5 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 610273 | Methamphetamine | 19554-5 |
| LPPS | List prescribed stimulants | 29305-0 |
| 610274 | Amphetamine | 19343-3 |
| 610275 | 3,4-methylenedioxymethamphetamine (MDMA) | 19568-5 |
| 610276 | 3,4-methylenedioxy-N-ethylamphetamine (MDEA) | 59844-1 |
| 610277 | 3,4-methylenedioxyamphetamine (MDA) | 19565-1 |
| 610278 | Ephedrine | 99108-3 |
| 610279 | Pseudoephedrine | 99109-1 |
| 610280 | Phentermine | 19674-1 |
| 610281 | Phencyclidine (PCP) | 19659-2 |
| 610282 | Methylphenidate | 19577-6 |
| 610283 | Ritalinic acid | 99110-9 |
| 610284 | Stimulant Interpretation | 54247-2 |
Day(s) Performed
Monday through Sunday