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Quinaprilat (Active Metabolite of Quinapril) in Serum/Plasma

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

This test measures the active metabolite of the blood pressure medication quinapril in your blood. It helps monitor how well your kidneys are processing the drug.

Quick summary

["Assessing kidney function and drug metabolism with quinaprilat levels."]

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

Key facts at a glance

LOINC
73181-0
Short code
Quinapril ind plt IgG SerPl Ql FC
Synonyms
Quinapril ind plt IgG SerPl Ql FC
Category
hematology
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
flow-cytometry
CPT
82784
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’re taking quinapril (a medication used to lower blood pressure) and have concerns about how your kidneys are handling it. It can also be part of routine monitoring if you have kidney disease or are at risk for it.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for a few hours before the blood draw. Avoid smoking or consuming caffeine for 30 minutes before testing if instructed.

What the Test Involves

A small needle will be inserted into a vein in your arm to draw blood. The process is quick and typically causes only minor discomfort. The blood sample will be sent to a lab for analysis.

What the Results Mean

Results help determine if your kidneys are properly processing quinapril. Abnormal levels may indicate kidney dysfunction or the need for dosage adjustments. Your provider will discuss these findings with you.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Quinaprilat levels are critical for managing kidney function and drug safety. High levels may suggest impaired kidney clearance, while low levels could indicate insufficient drug absorption or metabolism. Regular monitoring helps prevent complications like hypertension or kidney damage.

Short name

Quinaprilat Level

Frequently asked questions

How long does it take to get my test results back?
Results are typically available within 1–3 business days, depending on your lab’s processing time. Your healthcare provider will contact you once they’re ready to discuss them.
Can I eat or drink anything before this test?
Most labs do not require fasting, but follow any specific instructions your provider gives you. If fasting is needed, avoid solid foods for 8–12 hours before drawing blood.
Will this test affect my medication dose?
Possibly. If your kidney function is affected, your doctor may adjust your quinapril dose to prevent side effects or ensure safe levels. Always discuss results with your provider before making changes.
  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