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Serum or plasma concentration of a substance related to a condition (e.g., metabolic, inflammatory, or renal monitoring)

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

This test measures a specific substance in your blood that may help track a health condition, such as kidney function, inflammation, or metabolic balance.

Quick summary

["This test helps your healthcare provider monitor your condition by checking levels of a key substance in your blood."]

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

Key facts at a glance

LOINC
96550-9
Short code
Date latest lab test for cond of int
Synonyms
Date latest lab test for cond of int
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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 Is Done

Your doctor may order this test to assess how well your body is handling a particular substance, which could indicate issues like kidney disease, liver function, or other metabolic disorders. It may also be used to monitor treatment progress or detect early signs of problems.

What to Expect Before the Test

No special preparation is typically needed unless instructed by your doctor. You may be asked to fast for a certain period if the test involves fasting-related substances. Bring any medications you’re taking to your appointment.

During the Test

A healthcare professional will draw blood from a vein in your arm. You may feel a slight pinch, but it usually doesn’t cause significant discomfort. The blood sample will be sent to a lab for analysis.

After the Test

You can usually resume normal activities immediately. Apply gentle pressure to the site to stop any bleeding, and check the area for swelling or bruising. Avoid heavy lifting or strenuous activity for a short time if instructed.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

How long does it take to get results?
Results are typically available within 1 to 3 business days, depending on lab processing times. Your doctor will contact you directly with the findings once they are ready.
What does it mean if my results are outside the normal range?
If your results are outside the expected range, it doesn’t necessarily mean you have a problem right away. Your doctor will discuss the meaning with you based on your medical history, symptoms, and other test results. Follow-up testing or additional questions may be needed to understand the cause.
Can I eat or drink anything before this test?
Most of the time, you can eat and drink normally unless your doctor specifies otherwise. If fasting is required (e.g., for glucose-related tests), avoid food and liquids except water for a specified period before the test.
  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