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Achromatic Modulation Absorbance Screening in Serum

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

This test measures a generic substance concentration in serum using achromatic modulation absorbance, a method often employed in biochemical screening for detecting specific analytes. It may be part of a broader diagnostic evaluation.

Quick summary

["This screening helps identify potential abnormalities in serum chemistry that may require further investigation."]

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

Key facts at a glance

LOINC
33279-1
Short code
AChR Mod Ab Ser-sCnc
Synonyms
AChR Mod Ab Ser-sCnc
Category
coagulation
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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

Achromatic modulation absorbance screening detects the concentration of a specific substance in your serum. This technique uses light absorption properties to identify and quantify certain biochemical markers, often employed in preliminary diagnostic assessments.

Why It Might Be Ordered

Your healthcare provider may order this test if they suspect an underlying condition affecting serum chemistry, such as metabolic disorders, infections, or other systemic health issues. It can serve as an initial screening tool before more specific tests are conducted.

Common Uses and Indications

This screening test is typically used as part of a routine or targeted diagnostic workup. It may be particularly useful in monitoring conditions where serum substance levels fluctuate, such as in liver function, kidney function, or endocrine disorders.

Sample Collection and Preparation

For this test, a blood sample is drawn from a vein, usually in the arm. The blood is processed to separate serum, which is then analyzed using the achromatic modulation absorbance technique. Proper handling and storage of the sample are critical to ensure accurate results.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Achromatic Modulation Absorbance Screening

Frequently asked questions

How might abnormal results affect my health?
Abnormal results from this screening test may indicate an imbalance in your body’s biochemical processes. While this test alone does not provide a definitive diagnosis, it can prompt further testing to investigate potential underlying conditions. Your healthcare provider will discuss the results in detail and recommend next steps based on your overall health and symptoms.
What does a positive or abnormal result mean?
An abnormal result suggests that the concentration of the measured substance in your serum may be outside of expected ranges. This could signal a variety of conditions, including but not limited to, infections, metabolic disorders, or other systemic health issues. Follow-up testing and evaluation by a healthcare professional are essential to determine the cause and appropriate treatment.
Can lifestyle changes affect this test result?
Yes, lifestyle factors such as diet, hydration, exercise, and certain medications can influence serum chemistry. To ensure the most accurate results, your healthcare provider may recommend avoiding certain foods, medications, or activities for a specified period before the test.
  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