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Pentylone/Creatinine [Mass Ratio] in Urine — Confirmatory Test

Published: August 9, 2026Updated: August 16, 2026

A confirmatory urine test for pentylone, a designer stimulant, with creatinine used to account for differences in urine concentration.

Quick summary

["This test can confirm whether pentylone, a designer stimulant, is detectable in a urine sample."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
105711-6
Short code
Pentylone/Creat Ur Cfm
Synonyms
Pentylone/Creat Ur Cfm
Category
kidney
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
confirm
Specimen volume
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

What is this test?

This is a laboratory test that measures pentylone in urine. Pentylone is a stimulant chemically related to methamphetamine and MDPV. A confirmatory test is usually performed after a screening test gives a preliminary positive result.

Why might I need this test?

A clinician or workplace may order this test when there is concern about stimulant use, unexplained symptoms, or a need to verify a screening result. It may also be used in legal, forensic, or safety investigations.

How is the test performed?

A urine sample is collected and analyzed in the laboratory to identify and measure pentylone. Creatinine is also measured to help adjust the result for how concentrated or dilute the urine is. The laboratory’s confirmatory method provides stronger evidence than a rapid screening test.

How do I prepare for the test?

Follow the collection instructions provided by the healthcare professional or laboratory. A clean-catch urine sample is often requested, and avoiding unusually large amounts of water beforehand can help prevent an overly dilute sample. Fasting is generally not required, but ask the laboratory whether any medications or supplements should be disclosed.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Confirmatory Urine Pentylone Test

Frequently asked questions

Does a positive result mean someone was under the influence?
No. Detection shows that pentylone was present in the urine, but it does not by itself establish intoxication, impairment, or the exact time of use.
Why is a confirmatory test needed after a positive screen?
Screening tests can sometimes give preliminary or false-positive results. Confirmatory laboratory testing helps verify whether pentylone is actually present.
Why is creatinine included in the test?
Urine can vary greatly in concentration. Creatinine is used to help account for that variation when interpreting the pentylone result.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy