Antibiotic & Hormone Residue Testing

Antibiotic and hormone residue testing is essential for ensuring the safety, quality, and regulatory compliance of food, feed, and agricultural products. Residues may remain in meat, milk, eggs, seafood, honey, and feed materials due to improper withdrawal periods, excessive or unauthorized veterinary drug use, contaminated feed, or cross-contamination during farming and processing.

Even trace-level residues can contribute to antimicrobial resistance (AMR), endocrine disruption, allergic reactions, international trade restrictions, and rejection of products in domestic and export markets.

Eurofins provides comprehensive antibiotic and hormone residue testing services using advanced instrumentation and globally validated methods to help producers, processors, exporters, feed mills, and regulators detect residues, maintain compliance, and safeguard consumer health.

Why Antibiotic & Hormone Residue Testing Matters

Benefit	Purpose
Consumer safety	Prevents exposure to harmful drug and hormone residues
Regulatory compliance	Meets FSSAI, EU, Codex, US FDA, and export regulations
Animal health oversight	Ensures correct withdrawal periods and responsible drug use
Market acceptance	Reduces risk of export rejections and recalls
AMR & endocrine risk control	Limits antimicrobial resistance and hormonal disruption
Supply chain integrity	Prevents misuse, overuse, and fraudulent practices

Common Antibiotics & Hormones Detected

Major Antibiotic Classes Screened

Tetracyclines
Sulfonamides
Aminoglycosides
Fluoroquinolones
Macrolides
Beta-lactams
Polypeptides
Lincosamides
Nitrofurans and metabolites
Chloramphenicol

Hormones & Growth Promoters Monitored

Natural steroid hormones (estradiol, testosterone, progesterone)
Synthetic anabolic steroids
Stilbenes
Beta-agonists (e.g., clenbuterol, salbutamol)
Thyreostats
Corticosteroids

Hormones are tightly regulated or prohibited in many jurisdictions due to their endocrine-disrupting potential.

Products Commonly Tested

Product Category	Examples
Milk & Dairy	Raw milk, processed milk, cheese, butter
Meat & Poultry	Chicken, mutton, beef, processed meats
Seafood & Aquaculture	Shrimp, fish, mollusks
Eggs & Egg Products	Table eggs, liquid eggs
Animal Feed	Poultry feed, cattle feed, aquafeed
Honey & Bee Products	Natural honey, comb, royal jelly
Infant food raw materials	Milk powder, proteins, fats

Sources of Antibiotic & Hormone Residues

Source	Description
Improper withdrawal periods	Animals slaughtered or milked before drug clearance
Unauthorized drug or hormone use	Illegal growth promotion or off-label use
Contaminated feed	Carry-over from medicated feed
Cross-contamination	Shared milking, feeding, or processing equipment
Aquaculture misuse	Unapproved antibiotics or hormones in ponds

Health Risks from Residues

Risk Type	Impact
Antimicrobial resistance (AMR)	Reduced effectiveness of antibiotics
Endocrine disruption	Hormonal imbalance, developmental effects
Allergic reactions	Hypersensitivity, anaphylaxis
Gut microbiome disruption	Long-term immunity and digestive effects
Toxicity	Chloramphenicol, nitrofurans, anabolic steroids

Eurofins Instrumental & Analytical Services

Instrument / Platform	Purpose
LC-MS/MS	High-sensitivity multi-residue detection of antibiotics & hormones
GC-MS/MS	Analysis of steroid hormones and metabolites
HPLC-DAD / UV	Quantification of specific veterinary drugs
ELISA screening kits	Rapidapid class-specific screening
Microbial inhibition assays	Broad-spectrum antimicrobial activity detection

Detection limits meet MRL, EMRL, and MRPL requirements across global markets.

Global and Indian Regulations

The Food Safety and Standards (Contaminants, Toxins and Residues) Regulations, 2011, Version VIII (effective 01.04.2025), issued by the Food Safety and Standards Authority of India (FSSAI), establishes stringent limits on antibiotics and pharmacologically active substances in food to address antimicrobial resistance (AMR).

Section 2.3.2 sets maximum residue limits for antibiotics in seafood (e.g., Tetracycline at 0.1 mg/kg), bans specific antimicrobials like Chloramphenicol (EMRL 0.0003 mg/kg) in meat, milk, poultry, eggs, and aquaculture, and prohibits antibiotic use in honey production with Minimum Required Performance Limits (MRPLs, e.g., 0.3 µg/kg for Chloramphenicol) to detect misuse. It also specifies tolerance limits for antimicrobials in various foods to ensure safety and minimize AMR risks, aligning with global health standards. Below are the key tables summarizing these regulations:

Table 1: Antibiotics in Seafood

S.No.	Name of Antibiotics	Tolerance Limit (mg/kg or ppm)
1.	Tetracycline	0.1
2.	Oxytetracycline	0.1
3.	Trimethoprim	0.05
4.	Oxolinic acid	0.3

Table 2: Prohibited Antimicrobials and Drugs in Veterinary Practices

S.No.	Prohibited Substances
1.	Carbadox
2.	Chloramphenicol (EMRL: 0.0003 mg/kg)
3.	Chlorpromazine
4.	Clenbuterol
5.	Colistin
6.	Crystal Violet (Sum of Crystal Violet and Leucocrystal Violet)
7.	Glycopeptides
8.	Malachite Green (Sum of Malachite Green and Leucomalachite Green)
9.	Nitrofurans and its metabolites (furazolidone (AOZ), nitrofurazone (SEM), furaltadone (AMOZ), nitrofurantoin (AHD))
10.	Streptomycin and its metabolite dihydrostreptomycin
11.	Nitroimidazoles (including Dimetridazole, Ronidazole, Ipronidazole, Metronidazole, and their metabolites)
12.	Steroids
13.	Stilbenes
14.	Sulphamethoxazole
EMRL: 0.001 mg/kg for all except Chloramphenicol (0.0003 mg/kg).

Table 3: Antibiotics in Honey

Serial No.	Name of Antibiotics	Maximum Residue Performance Limit (MRPL) (µg/kg)
1.	Chloramphenicol	0.3
2.	Nitrofurans and its metabolites	1
3.	Sulphonamides and its metabolites	10 (individually or collectively)
4.	Streptomycin	10 (individually or collectively)
5.	Tetracycline	10
6(a).	Oxytetracycline	10
6(b).	Chlortetracycline	10
7.	Ampicillin	10
8.	Enrofloxacin	10
9.	Ciprofloxacin	10
10.	Erythromycin	10
11.	Tylosin	10

Table 4: Antimicrobials and Drugs in Various Foods

Serial No.	Antimicrobials and Drugs	Food	Tolerance Limit (mg/kg)
1.	Ampicillin	All edible animal tissues, Fats, Milk	0.01
		Finfish	0.05
2.	Amprolium	Cattle (Kidney, Liver, Muscle)	0.5
		Cattle (Fat)	2.0
		Poultry (Kidney, Liver)	1.0
		Poultry (Egg)	7.0
		Poultry (Muscle)	0.5
3.	Apramycin	All edible animal tissues except fish, Fats, Milk	0.01
4.	Albendazole	Species not specified (Muscle, Fat, Milk, Fish)	0.1
		Species not specified (Liver, Kidney)	5.0
5.	Amoxicillin	Cattle, Pig, Sheep (Muscle, Liver, Kidney, Fat)	0.05
		Cattle, Sheep (Milk)	0.004
		Finfish (Fillet, Muscle)	0.05
6.	Cloxacillin	All edible animal tissues, Fats	0.01
		Milk	0.03
7.	Chlortetracycline/Oxytetracycline/Tetracycline	Cattle, Pig, Poultry, Sheep (Muscle)	0.2
		Cattle, Pig, Poultry, Sheep (Liver)	0.6
		Cattle, Pig, Poultry, Sheep (Kidney)	1.2
		Cattle, Sheep (Milk)	0.1
		Poultry (Eggs)	0.4
		Giant prawn (muscle), Fish	0.2
8.	Ceftiofur	Cattle, Pig, Sheep (Muscle)	1.0
		Cattle, Pig, Sheep (Liver)	2.0
		Cattle, Pig, Sheep (Kidney)	6.0
		Cattle, Pig, Sheep (Fat)	2.0
		Cattle (Milk)	0.1 mg/l
9.	Cephapirine	All edible animal tissues except fish, Fats	0.01
		Milk	0.06
10.	Clopidol	All edible animal tissues except fish, Fats	0.01
11.	Closantel	Cattle (Muscle, Liver)	1.0
		Cattle (Kidney)	3.0
		Cattle (Fat)	3.0
		Sheep (Muscle, Liver)	1.5
		Sheep (Kidney)	5.0
		Sheep (Fat)	2.0
		Milk (Bovine)	0.045
12.	Cefphacetrile	All edible animal tissues except fish, Fats	0.01
		Milk	0.125
13.	Cephalexin	All edible animal tissues except fish, Fats	0.01
		Milk	0.1
14.	Danofloxacin	Cattle, Pig, Chicken (Muscle)	0.2 (Cattle, Chicken), 0.1 (Pig)
		Cattle, Chicken (Liver, Kidney)	0.4
		Pig (Liver)	0.05
		Pig, Chicken (Kidney)	0.2
		Cattle, Pig, Chicken (Fat)	0.1
15.	Doramectin	Cattle (Muscle)	0.01
		Cattle (Liver, Kidney)	0.1, 0.03
		Cattle (Fat)	0.15
		Cattle (Milk)	0.015
		Pig (Muscle)	0.005
		Pig (Liver, Kidney, Fat)	0.1, 0.03, 0.15
16.	Diminazene	Cattle (Muscle)	0.5
		Cattle (Liver)	12.0
		Cattle (Kidney)	6.0
		Cattle (Milk)	0.15
17.	Erythromycin	Chicken, Turkey (Muscle, Liver, Kidney, Fat)	0.1
		Chicken (Eggs)	0.05
18.	Flumequine	Cattle, Chicken, Pig, Sheep, Trout (Muscle)	0.5
		Cattle, Chicken, Pig, Sheep (Liver)	0.5
		Cattle, Chicken, Pig, Sheep (Kidney)	3.0
		Cattle, Chicken, Pig, Sheep (Fat)	1.0
19.	Flunixin	All edible animal tissues except fish, Fats, Milk	0.01
20.	Febantel/Fenbendazole/Oxyfendazole	Cattle, Pig, Sheep, Goat (Muscle, Liver, Kidney, Fat, Milk)	0.1 (Muscle, Fat, Milk), 0.5 (Liver, Kidney)
21.	Gentamicin	Cattle, Pig (Muscle, Fat)	0.1
		Cattle, Pig (Liver)	2.0
		Cattle, Pig (Kidney)	5.0
		Cattle (Milk)	0.2 mg/l
22.	Ivermectin	Cattle (Milk)	0.01
		Cattle (Liver, Fat, Muscle, Kidney)	0.8, 0.4, 0.03, 0.1
		Pig, Sheep (Liver)	0.015
		Pig, Sheep (Fat)	0.02
23.	Lincomycin	Cattle (Milk)	0.15
		Chicken, Pig (Muscle)	0.2
		Chicken, Pig (Liver)	0.5
		Chicken (Kidney)	0.5
		Pig (Kidney)	1.5
		Chicken, Pig (Fat)	0.1
24.	Levamisole	Cattle, Pig, Sheep, Poultry (Muscle, Liver, Kidney, Fat)	0.01 (Muscle, Kidney, Fat), 0.1 (Liver)
25.	Monensin	Cattle, Sheep, Goat, Chicken, Turkey, Quail (Muscle, Kidney)	0.01
		Cattle, Sheep, Goat (Liver)	0.1 (Cattle), 0.02 (Sheep, Goat)
		Cattle, Sheep, Goat, Chicken, Turkey, Quail (Fat)	0.1
		Cattle (Milk)	0.002
26.	Moxidectin	Cattle (Muscle)	0.02
		Cattle, Sheep (Liver, Kidney)	0.1, 0.05
		Cattle, Sheep (Fat)	0.5
27.	Meloxicam	Bovines (Muscle)	0.02
		Bovines (Kidney, Liver)	0.065
		Bovines (Milk)	0.015
28.	Neomycin	Cattle, Chicken, Duck, Goat, Pig, Sheep, Turkey (Muscle, Liver, Fat)	0.5
		Cattle, Chicken, Duck, Goat, Pig, Sheep, Turkey (Kidney)	10
		Cattle (Milk)	1.5
		Chicken (Eggs)	0.5
29.	Nicarbazin	Chicken (Kidney, Fat or skin, Liver, Muscle)	0.2
30.	Oxybendazole	All edible animal tissues except fish, Fats	0.01
31.	Oxyclozanide	All edible animal tissues except fish, Fats, Milk	0.01
32.	Parbendazole	All edible animal tissues except fish, Fats, Milk	0.01
33.	Praziquantel	Pig (All edible tissues)	0.01
		Sheep (All edible tissues)	0.05
34.	Penicillin G/Benzylpenicillin	Pig, Chicken, Cattle (Muscle, Liver, Kidney)	0.05
		Cattle (Milk)	0.004
35.	Spectinomycin	Cattle, Chicken, Pig, Sheep (Muscle, Liver, Fat)	0.5, 2.0 (Liver), 2.0 (Fat)
		Cattle, Chicken, Pig, Sheep (Kidney)	5.0
		Cattle (Milk)	0.2 mg/l
		Chicken (Eggs)	2.0
36.	Sulfadiazine	All edible animal tissues, Fats, Milk	0.01
37.	Sulfanilamide	All edible animal tissues, Fats, Milk	0.01
38.	Sulfaquinoxaline	All edible animal tissues except fish, Fats, Milk	0.01
39.	Sulfadimidine	Cattle (Milk)	0.025
		No Specified (Muscle, Fat, Kidney, Liver)	0.1
40.	SulfaChloropyrazine	All edible animal tissues except fish, Fats, Milk	0.01
41.	Sulfamethazine	All edible animal tissues except fish, Fats	0.01
42.	Sulfadimethoxine	All edible animal tissues except fish, Fats, Milk	0.01
43.	Thiabendazole	Cattle, Pig, Sheep, Goat (Muscle, Liver, Kidney, Fat, Milk)	0.1
44.	Triclabendazole	Cattle (Muscle)	0.25
		Cattle (Liver, Kidney, Fat or skin)	0.85, 0.4, 0.1
		Sheep (Muscle, Liver, Kidney, Fat or skin)	0.2, 0.3, 0.2, 0.1
		Milk (All ruminants)	0.01
45.	Trimethoprim	All edible animal tissues except fish, Fats	0.01
		Milk	0.05
46.	Tylosin	Cattle, Pig, Sheep, Chicken (Muscle, Liver, Kidney, Fat or skin)	0.1
		Chicken (Eggs)	0.3
47.	Virginiamycin	Poultry and egg	0.01
48.	Xylazine	All edible animal tissues except fish, Fats	0.01
49.	Zinc Bacitracin	All edible animal tissues except fish, Fats	0.01
		Milk	0.1

https://www.fssai.gov.in/upload/uploadfiles/files/Comp_Contaminants_Regulations_2_4_2025_VIII.pdf

Global and National AMR Regulations

Jurisdiction	Regulation / Standard	Key Requirements / Objectives
FSSAI (India)	Food Safety and Standards (Contaminants, Toxins and Residues) First Amendment Regulations, 2024 (Effective April 1, 2025)	Bans 14 antibiotics (e.g., chloramphenicol, colistin) in meat, milk, poultry, aquaculture, and honey. Sets residue limits (≤0.001 mg/kg) and aligns with Muscat Manifesto to reduce antimicrobial use by 30–50% by 2030.
MoHFW (India)	National Action Plan on AMR (NAP-AMR II, 2024–2029)	Enforces One Health surveillance, regulates antibiotic sales, and aligns with FSSAI’s antibiotic limits.
EU	Council Recommendation on AMR (2023) and Regulation (EU) 2024/580	Limits livestock antibiotic use, bans growth-promoter antibiotics, and requires residue reporting to EFSA.
WHO (Global)	WHO Global Action Plan on AMR (Updated 2024)	Targets 30–50% reduction in agrifood antimicrobial use by 2030, strengthens surveillance, and supports Muscat commitments.

Eurofins Testing Capabilities

Comprehensive Residue Panels

Multi-class antibiotic & hormone screening
Quantification aligned with MRL / EMRL / MRPL
Risk-ranked interpretation

Regulatory Compliance Testing

FSSAI
EU Regulation (EC) 37/2010
Codex MRLs
US FDA & USDA

Specialized Programs

Aquaculture & shrimp export residue testing
Dairy antibiotic & hormone monitoring
Slaughterhouse compliance verification
Feed contamination root-cause analysis

Eurofins Testing Workflow

Step	Purpose
Sampling plan	Representative and compliant sampling
Screening	Broad-spectrum detection
Confirmatory testing	LC-MS/MS or GC-MS/MS quantification
Interpretation	Comparison with legal thresholds
Reporting	Digital CoA & export-ready documentation

Case Study: Antibiotic & Hormone Residue Compliance

An export-oriented dairy and poultry producer partnered with Eurofins to strengthen antibiotic and hormone residue monitoring. Multi-residue LC-MS/MS testing detected trace non-compliances linked to withdrawal practices. Corrective actions and re-testing confirmed compliance with FSSAI and EU limits, enabling smooth exports and improved buyer confidence.

Why Choose Eurofins

ISO/IEC 17025-accredited global laboratories
Advanced trace-level detection capabilities
Expertise across food, dairy, poultry, aquaculture, feed & exports
Strong regulatory awareness across EU, US, and Asia
Fast turnaround with secure digital reporting
Trusted by manufacturers, exporters, integrators & regulators

Partner with Eurofins Antibiotic & Hormone Residue Testing Laboratories to:

Detect residues with precision
Ensure global regulatory compliance
Protect consumer health and brand reputation
Reduce rejections, recalls, and AMR risks

Partner with Eurofins your trusted pathway to compliant, export-ready food

Enquire now: www.eurofins.in/food-testing/enquire-now/