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Minocycline Substance Concentration in Urine (24-Hour Collection)

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

This test measures the amount of minocycline, a type of antibiotic, in your urine over a 24-hour period. It helps assess how well your body is processing this medication.

Quick summary

["This test helps doctors check if your minocycline levels are within expected ranges for your treatment."]

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

Key facts at a glance

LOINC
55156-4
Short code
Minocycline Islt SlowMyco
Synonyms
Minocycline Islt SlowMyco
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
method-for-slow-growing-mycobacteria
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 healthcare provider may order this test if you’re taking minocycline to treat infections like acne, skin infections, or certain types of arthritis. It helps ensure the medication is working properly and is not causing unwanted side effects.

What to Expect Before the Test

You’ll need to collect all your urine for a full 24-hour period. Typically, you’ll start the collection after waking up and continue until you wake up the next morning. Store the urine in a refrigerator until you return it to the lab.

What to Expect During the Test

No special preparation is needed beyond collecting your urine sample. The lab will analyze the combined urine sample to measure minocycline levels.

Possible Results and Their Meaning

Results are compared to expected ranges for patients on minocycline therapy. Low levels may indicate poor absorption or metabolism of the drug, while very high levels could suggest issues like kidney problems or improper dosing.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Abnormal results may prompt further evaluation to check for kidney function, drug interactions, or adherence to the medication regimen. Your doctor will discuss findings with you and may adjust your treatment plan if needed.

Short name

24-Hour Urine Minocycline

Frequently asked questions

How long does it take to get my results?
Results are typically available within 1 to 3 business days after the lab processes your sample.
What does a normal range mean for this test?
A normal range isn’t provided here because it depends on your specific medical condition, dosage, and other factors. Your doctor will interpret the results in the context of your treatment plan.
Can I drink water during the 24-hour urine collection?
Yes, you can drink plenty of water to ensure adequate urine volume, but avoid excessive fluids that might dilute the sample too much. Follow your healthcare provider’s specific instructions.
  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