Stereoisomer-specific Substance Concentration (Serum/Plasma)
This test measures the concentration of specific stereoisomers (e.g., enantiomers) of a substance in your blood, which can help identify certain metabolic or biochemical conditions.
["Understanding how different forms of a substance behave in your body may assist in diagnosing or monitoring health issues."]
Key facts at a glance
- LOINC
- 36940-5
- Short code
- Deprecated XXX CT Stereo
- Synonyms
- Deprecated XXX CT Stereo
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ct
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms or conditions that could be influenced by the presence of specific stereoisomers, such as certain drug interactions, metabolic disorders, or genetic conditions. It may also be used in research or specialized diagnostic scenarios.
What to Expect During the Test
A blood sample will be drawn from a vein, typically in your arm. The sample is then processed to analyze the stereoisomer composition of the substance in question. Results are usually reported as a ratio or relative concentration of different stereoisomers.
Common Uses and Conditions
This test is less commonly used in routine clinical practice but may be utilized in niche cases, such as evaluating drug metabolism differences, studying chiral compounds in pharmaceuticals, or assessing certain inherited metabolic disorders.
Preparation and Timing
No special preparation is needed for this test. Blood is collected at a time convenient for you, and results are typically available within a few days, depending on laboratory processing.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Stereoisomer analysis can provide critical insights into how your body processes certain substances, which may be vital for diagnosing conditions like drug toxicity, genetic metabolic errors, or understanding the pharmacokinetics of chiral drugs. Differences in stereoisomer concentrations can indicate altered enzyme activity or genetic variations affecting metabolism.
Short name
Stereoisomer Profile (Serum/Plasma)
Frequently asked questions
What does a stereoisomer test measure?
How is the test performed?
When might this test be recommended?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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