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Serum/plasma concentration of ketorolac (a nonsteroidal anti-inflammatory drug)

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

This test measures the amount of ketorolac, a pain reliever and anti-inflammatory medication, in your blood. It helps your healthcare provider check how much of the drug is in your system.

Quick summary

["This test helps monitor your drug levels to ensure safe and effective treatment."]

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

Key facts at a glance

LOINC
73321-2
Short code
Ketorolac ind plt IgG SerPl Ql FC
Synonyms
Ketorolac 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 Is Done

Your doctor may order this test if you’re taking ketorolac for a specific period, such as after surgery or for chronic pain management. It helps prevent excessive drug buildup, which could lead to side effects like stomach bleeding or kidney issues.

What to Expect Before the Test

No special preparation is needed. You may have a small needle inserted into your arm or vein to draw blood. If you’re on long-term ketorolac, your doctor may adjust your dose based on these results.

What the Results Mean

Results show how much ketorolac is in your blood at the time of testing. They help determine if your dose is too high or too low, ensuring your treatment stays safe and effective.

Possible Side Effects and Risks

High levels of ketorolac can increase risks like stomach ulcers, bleeding, or kidney problems. Your doctor will adjust your medication if needed to keep levels within safe limits.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

This test is primarily used to monitor therapeutic drug levels in patients on ketorolac, especially those at higher risk for drug-related complications (e.g., kidney disease, liver issues, or those taking other medications that interact with NSAIDs).

Short name

Ketorolac Level

Frequently asked questions

Why might my doctor want to check my ketorolac levels?
Your doctor may order this test if you’re taking ketorolac for a long time, have kidney or liver problems, or are taking other medications that could affect how ketorolac works in your body.
What does a low or high ketorolac level mean?
A low level might mean your body isn’t absorbing enough of the drug, while a high level could indicate side effects like nausea, stomach pain, or increased risk of bleeding. Your doctor will discuss results with you.
Can I eat or drink before this test?
You can eat and drink normally unless your doctor specifies otherwise. Blood tests don’t require fasting unless they involve substances like glucose or lipids.
  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