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Nystatin Indicator in Plasma (Qualitative)

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

This test checks for the presence of nystatin, an antifungal medication, in your blood plasma using a qualitative method.

Quick summary

["Determines if your blood contains nystatin, a medication used to treat fungal infections."]

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

Key facts at a glance

LOINC
73236-2
Short code
Nystatin ind plt IgM SerPl Ql FC
Synonyms
Nystatin ind plt IgM 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

What This Test Measures

Nystatin is an antifungal antibiotic used to treat infections caused by certain fungi, such as Candida. This test detects whether the medication is present in your bloodstream, typically after administration. The qualitative method identifies presence or absence rather than precise concentration.

Why It’s Ordered

Your healthcare provider may order this test if you’ve been prescribed nystatin to confirm its presence in your blood. It helps monitor drug levels and ensure proper dosing.

Common Uses in Clinical Practice

This test is primarily used in specialized settings, such as monitoring patients receiving systemic antifungal therapy or those with suspected drug-related side effects.

What to Expect Before the Test

No special preparation is needed. A blood sample is drawn from a vein, usually in your arm. You may feel slight discomfort, but it typically lasts a few minutes.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Positive results indicate nystatin is circulating in your blood, confirming therapeutic administration. Negative results suggest the medication may not be absorbed effectively or may have been discontinued. This can guide adjustments to treatment plans, especially in patients with renal or liver impairment.

Frequently asked questions

Why was this test ordered for me?
Your healthcare provider may have ordered this test to confirm whether nystatin is present in your bloodstream, especially if you’ve been prescribed this antifungal medication or if monitoring its effects is necessary.
What does a positive result mean?
A positive result means nystatin is detected in your blood, indicating the medication is being absorbed and present in your system. This helps ensure the medication is working as intended.
Can I stop taking nystatin if the test is negative?
Not necessarily. A negative result means nystatin isn’t detected in your blood, but this could also indicate the medication hasn’t been administered yet, was not absorbed properly, or was discontinued. Always follow your healthcare provider’s 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