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Official Description

Salicylate

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

Salicylate refers to a salt or ester derived from salicylic acid, which is a compound commonly associated with a group of medications known as salicylates. These medications, including aspirin, are utilized primarily for their analgesic (pain-relieving), anti-inflammatory, and antipyretic (fever-reducing) properties. Additionally, salicylates play a role in preventing excessive blood clotting, making them significant in various therapeutic contexts. Testing for salicylate levels is particularly critical in situations where there is suspicion of overdose or ingestion of unknown substances, especially in cases presenting with symptoms of metabolic acidosis. Symptoms indicative of salicylate toxicity may include nausea, hyperventilation, arrhythmias, tinnitus, and vertigo. In more severe cases, particularly in unconscious individuals or children, the ingestion of salicylates can lead to serious health complications such as electrolyte imbalances, low blood glucose levels, dehydration, confusion, hearing loss, convulsions, hallucinations, delirium, and potentially fatal outcomes such as coma or death. The testing process typically employs immunoassay or enzymatic methods, such as fluorescence polarization immunoassay (FPIA), which analyze serum or plasma samples, and occasionally urine samples, to quantify salicylate levels. Results are reported in milligrams per deciliter (mg/dL) or micrograms per milliliter (mcg/mL), with symptoms of toxicity generally manifesting at salicylate concentrations exceeding 10-30 mg/dL or 100-300 mcg/mL. The FPIA technique involves the use of a salicylate-specific antigen labeled with fluorescein, which is introduced to the serum sample and subjected to light irradiation. The reflected light is then analyzed to differentiate between bound and unbound fluorescein, allowing for the quantification of salicylate levels based on the intensity of the reflected signal.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

Salicylate testing is indicated in several clinical scenarios where there is a concern for potential toxicity or overdose. The following conditions warrant the performance of this test:

  • Unknown Ingestion Testing may be performed when there is suspicion that an individual has ingested an unknown type of pills, particularly in cases where the patient presents with symptoms of metabolic acidosis.
  • Overdose Symptoms The test is indicated when a patient exhibits symptoms of salicylate overdose, which may include nausea, hyperventilation, arrhythmias, tinnitus, or vertigo.
  • Unconscious Patients In cases where an unconscious person or child is suspected of having ingested an overdose, salicylate testing is critical for diagnosis and management.

2. Procedure

The procedure for salicylate testing involves several key steps to ensure accurate measurement of salicylate levels in the patient's serum or plasma. The following procedural steps are typically followed:

  • Sample Collection A blood sample is collected from the patient, typically via venipuncture, to obtain serum or plasma. In some cases, urine samples may also be collected for analysis.
  • Sample Preparation The collected serum or plasma sample is prepared for testing, which may involve centrifugation to separate the serum from cellular components.
  • Immunoassay Method The fluorescence polarization immunoassay (FPIA) method is employed, where a salicylate-specific antigen labeled with fluorescein is added to the serum sample. This antigen binds to salicylate molecules present in the sample.
  • Light Irradiation The prepared sample is then irradiated with light, causing the fluorescein to emit light at a different frequency. The amount of light reflected back is measured by a detector.
  • Quantification The machine analyzes the polarization of the reflected light to differentiate between the antibody-bound and unbound fluorescein. The strength of the signal correlates with the concentration of salicylate in the serum, allowing for quantification of the salicylate level, reported in mg/dL or mcg/mL.

3. Post-Procedure

After the salicylate testing procedure, the patient may not require any specific post-procedure care unless otherwise indicated by their clinical condition. It is essential to monitor the patient for any symptoms of toxicity, especially if elevated salicylate levels are detected. In cases of confirmed salicylate toxicity, appropriate medical interventions should be initiated, which may include supportive care, hydration, and potentially the use of activated charcoal or other treatments as deemed necessary by the healthcare provider. Follow-up testing may also be required to monitor salicylate levels and assess the effectiveness of treatment.

Short Descr DRUG ASSAY SALICYLATE
Medium Descr DRUG ASSAY SALICYLATE
Long Descr Salicylate
Status Code Statutory Exclusion (from MPFS, may be paid under other methodologies)
Global Days XXX - Global Concept Does Not Apply
PC/TC Indicator (26, TC) 9 - Not Applicable
Multiple Procedures (51) 9 - Concept does not apply.
Bilateral Surgery (50) 9 - Concept does not apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 9 - Concept does not apply.
Co-Surgeons (62) 9 - Concept does not apply.
Team Surgery (66) 9 - Concept does not apply.
Diagnostic Imaging Family 99 - Concept Does Not Apply
CLIA Waived (QW) No
APC Status Indicator Conditionally packaged laboratory tests
Type of Service (TOS) 5 - Diagnostic Laboratory
Berenson-Eggers TOS (BETOS) none
MUE 2
90 Reference (outside) laboratory: when laboratory procedures are performed by a party other than the treating or reporting physician or other qualified health care professional, the procedure may be identified by adding modifier 90 to the usual procedure number.
26 Professional component: certain procedures are a combination of a physician or other qualified health care professional component and a technical component. when the physician or other qualified health care professional component is reported separately, the service may be identified by adding modifier 26 to the usual procedure number.
Date
Action
Notes
2021-01-01 Added Code added.
Code
Description
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