Hair Follicle Drug Testing - Castella, CA

Employment, DOT, Court Ordered, Personal
Urine| Hair Follicle | Oral Fluid | Blood | ETG

25 Hair Drug Testing Centers in Castella

Minutes Away, Test Today

914 Pine St12.45 miles

914 Pine St
Mount Shasta, CA 96067

150 Boles St19.84 miles

150 Boles St
Weed, CA 96094

4156 Ashby Court,31.77 miles

4156 Ashby Court,
Shasta Lake, CA 96019

3016 West St33.13 miles

3016 West St
Shasta Lake, CA 96019

987 Mission De Oro Dr Ste C37.70 miles

987 Mission De Oro Dr Ste C
Redding, CA 96003

1093 Hilltop Dr37.88 miles

1093 Hilltop Dr
Redding, CA 96003

1007 Dana Dr Ste A38.22 miles

1007 Dana Dr Ste A
Redding, CA 96003

1710 Churn Creek Rd38.30 miles

1710 Churn Creek Rd
Redding, CA 96002

2301 Park Marina Dr Ste 1738.70 miles

2301 Park Marina Dr Ste 17
Redding, CA 96001

20647 Commerce Way38.72 miles

20647 Commerce Way
Burney, CA 96013

455 South St38.80 miles

455 South St
Redding, CA 96001

610 Azalea Ave38.81 miles

610 Azalea Ave
Redding, CA 96002

1725 Gold St38.87 miles

1725 Gold St
Redding, CA 96001

2510 Airpark Drive, Suite 20239.47 miles

2510 Airpark Drive, Suite 202
Redding, CA 96001

691 Maraglia St Ste A39.51 miles

691 Maraglia St Ste A
Redding, CA 96002

3270 Churn Creek Rd40.04 miles

3270 Churn Creek Rd
Redding, CA 96002

3462 Bechelli Ln Ste F40.23 miles

3462 Bechelli Ln Ste F
Redding, CA 96002

Meadow Oak Dr40.68 miles

Meadow Oak Dr
Redding, CA 96002

Po Box 1229 60 Easter Ave41.51 miles

Po Box 1229 60 Easter Ave
Weaverville, CA 96093

120 Singleton Ln41.76 miles

120 Singleton Ln
Yreka, CA 96097

Easter Ave42.72 miles

Easter Ave
Weaverville, CA 96093

101 E Oberlin Rd43.24 miles

101 E Oberlin Rd
Yreka, CA 96097

205 Executive Ct43.93 miles

205 Executive Ct
Yreka, CA 96097

534 N Main St44.48 miles

534 N Main St
Yreka, CA 96097

2656 Gateway Dr,47.43 miles

2656 Gateway Dr,
Anderson, CA 96007

Employment, Court Ordered, Probation, Family

Accredited Drug Testing provides thorough hair follicle drug evaluations in Castella, California. If a hair drug or alcohol examination is required, Accredited Drug Testing is an expert in hair analysis, with centers spread across all cities Nationwide capable of conducting these tests. Ideally, 1.5 to 2 inches of hair from the crown or body can be used in most scenarios. Hair assessments can identify drugs, alcohol/ETG, or offer other tailored options.

The practice of performing drug screens has increasingly turned to hair follicle tests over recent years. Numerous employers, judicial bodies, and Substance Abuse experts now prefer hair drug screens over traditional urine exams. These evaluations are suitable for employers with strict anti-drug policies, the judicial system, and those on probation. A key advantage of hair testing is its extended detection window for drug consumption, typically up to 90 days, collected via an observed procedure, rendering it nearly tamper-proof. Nonetheless, for recent use within 5 days, the urine test remains the most precise option.

What it is, How it works

Hair testing is regarded as an effective means for identifying drug and alcohol usage. Hair locks in a long-term record of alcohol and other substances by embedding biomarkers within the strands of hair as they grow. If gathered near the scalp, hair can offer up to roughly a 3-month detection period for alcohol and drugs. It is straightforward to gather, relatively difficult to tamper with, and convenient to send.

A 1.5-inch portion of about 200 hairs (equivalent to a #2 pencil's thickness) near the scalp yields 100mg of hair, the optimal sample size for analysis and verification. For EtG, add-on, and/or multi-panel tests, 150mg of hair is ideal. Utilize a jeweler’s scale for specimen weighing. If scalp hair isn't available, an equivalent amount of body hair is a suitable alternative. When referring to head hair, it denotes only the scalp hair. Body hair encompasses all other types (facial, axillary, etc.).

Process Overview

The key stages in the laboratory processing of a drug test result are Accessioning, Screening, Extraction, and Confirmation.

Accessioning comprises the initial handling of a sample in a laboratory system. This step includes confirming the sample's sealed and safe shipment, assigning it a randomized LAN (Laboratory Accessioning Number), and finalizing any additional data that wasn’t included in an electronic chain of custody system.

Screening represents an initial rapid assessment for substance abuse. Though Screening offers a cost-efficient approach to negate drug usage per sample, a positive result requires confirmation for court acceptance. Any samples showing presumptive positives during Screening must undergo a follow-up validation.

If a sample is deemed presumptively positive during Screening, more hair is extracted from the sample and prepped for Extraction. Here, drugs are retrieved from hair at notably lesser concentrations than other methods (i.e., urine or oral fluid), highlighting the complexity of hair drug screening.

Verification of any positive screening results is executed using GC/MS, GC/MS/MS, or LC/MS/MS techniques. Presumptive positive samples undergo cleaning before confirmation. The complete lab process, spanning from Accessioning to Confirmation, is evaluated under CAP Hair standards and ISO / IEC 17025 accreditation.

Benefits of hair drug testing:

  • Extended detection window: Hair drug tests can reveal drug usage over a 90-day span, outlasting the shorter window offered by urine tests.
  • Resistant to manipulation: Hair drug tests are challenging to deceive, providing more precise outcomes.
  • Supplies historical context: It can illustrate a regular drug usage pattern, rather than only recent consumption.

Drawbacks:

  • Inability to indicate recent drug use: Detection of drugs in hair requires about 5-7 days.
  • Expense: Hair drug testing is costlier relative to other drug testing techniques.
  • Result variance: Elements like hair color and personal differences in hair growth can influence drug metabolite levels in hair.

Note: Although often termed "hair follicle tests", the analysis focuses on the hair strand itself and not the follicle beneath the scalp.

Why Hair Follicle Testing Beats Urine Testing

In Castella, CA, hair follicle testing outshines urine tests due to its extensive detection range and harder-to-manipulate samples. Hair testing discovers drug use within an extended timeframe, making it superior for ongoing consumption insights. While urine tests only capture short-term usage, hair tests present a nuanced view of an individual's habits.

Employers benefit from the reliability of hair tests, especially those adhering to zero-tolerance policies. Compared to traditional urine screens, hair analysis is less susceptible to deception, ensuring integrity in testing and giving employers confidence in the results.

Extended Detection Window

The extended detection window of hair follicle tests in Castella, CA, provides a thorough understanding of a person's substance use over 90 days. This makes it the optimal choice for employers wishing for an overview of an employee or candidate's long-term drug habits. It paints a comprehensive picture of lifestyle choices.

Detection over a prolonged period is crucial in professions where safety is paramount. Employers aiming for minimal drug-related risks can rely on hair testing for informed employment decisions, ensuring no recent substance abuse goes unnoticed.

Tamper-Resistant Testing Method

Hair follicle tests significantly minimize the probability of sample tampering in Castella, CA. The method's design ensures reliability and unquestionability, delivering results that withstand scrutiny. Due to the nature of hair testing, it's scantly susceptible to interference.

The rigorous collection processes privilege authenticity, with each test conducted under careful observation. This reduces the chance of manipulating the results, giving employers the assurance of valid outcomes that reflect actual substance use histories.

Convenient Nationwide Locations

Our strategic placement of testing facilities ensures widespread accessibility across Castella, CA, and the nation. Multiple convenient locations make the testing process seamless and efficient, reducing the logistical load for individuals and corporate clients alike.

Local centers enhance user experience by providing easy access to testing services. Whether in Castella or another city, obtaining a test is a hassle-free endeavor, supporting timely completion and reducing wait times.

Simple, Confidential Process

The process of undertaking hair follicle testing in Castella, CA, is both straightforward and confidential. Ordering, undertaking, and receiving your results are streamlined processes, safeguarding your privacy at each step. Concerns over data protection are addressed with meticulous care.

Privacy is at the forefront of our services, ensuring your information remains secure and your experience remains unobtrusive. For those seeking discretion in their drug testing, hair analysis promises simplicity and confidentiality throughout the procedure.

Affordable, Fast Turnaround

Affordable pricing structures make hair follicle testing accessible for businesses of all sizes in Castella, CA. We ensure competitive rates and quick turnarounds that offer excellent value while maintaining high standards of service quality.

Our efficient processes expedite result delivery, assisting employers in making prompt and informed decisions with little delay. The combination of cost-effectiveness and speed makes hair antigen tests an appealing choice for cost-sensitive sectors.

Fast, Accurate, and Reliable Results

The precision and swiftness of hair follicle drug assessments in Castella, CA, set them apart as a preferred method. Detecting substance consumption with remarkable accuracy, these tests ensure reliable outcomes. Fast processing times mean results are quickly obtained, supporting timely decisions regarding workplace safety and compliance.

Hair testing's high validity in identifying drugs depends on its ability to detect even trace amounts of substances. Advanced technology supports this method, providing peace of mind that the results are dependable and reflective of an individual's drug use history.

Compliance and Peace of Mind for Employers

Choosing hair follicle testing in Castella, CA, provides employers with compliance reassurance. Adhering to drug-free workplace standards becomes straightforward, curbing legal risks and augmenting overall workplace security. Peace of mind follows thorough and effective drug screening methods.

Both large and small businesses can benefit from reducing liabilities associated with undocumented substance abuse. With hair analysis, employers can concentrate on fostering a healthier and safer work environment, following stringent policy guidelines.

What's New In Hair Follicle Drug Testing according to the Hair Drug Testing Experts

With its multidisciplinary nature, hair testing brings together researchers, scientists, and experts from various domains to develop innovative techniques, explore new methodologies, and address emerging concerns, responding to the ever-evolving challenges of drug abuse, therapeutic drug monitoring, and environmental exposures to pollutants.

The joint meeting of the Society of Hair Testing (SoHT) and the Italian Group of Forensic Toxicologists (GTFI) was organized in Verona, June 8–10, 2022, and hosted by the Legal Medicine team of the Verona University Hospital, directed by Franco Tagliaro together with Federica Bortolotti and Rossella Gottardo.

It served as a prominent platform for knowledge exchange and collaboration, facilitating groundbreaking advancements in hair testing and analysis. In this special issue of Drug Testing and Analysis, we aim to showcase the remarkable manuscripts presented at this significant event, shedding light on the latest research and highlighting the future directions in this field.

Novel Analytical Techniques: The Verona meeting witnessed the unveiling of cutting-edge analytical techniques, offering enhanced sensitivity, selectivity, and accuracy for drug testing. Remarkable advancements in sample preparation, detection, and identification of drug compounds have been presented. The manuscripts in this section presented novel approaches, such as multianalyte methods and on-line preparation which can enable rapid analysis and improve thorough forensic investigations.

Biomarkers and Pharmacokinetics: The identification and validation of reliable biomarkers and pharmacokinetic studies are fundamental aspects of drug testing and analysis. The impact of hair treatments on the oxidation/decomposition of drugs in hair was also explored, as the long-term fate of drugs incorporated in the keratin matrix. Furthermore, the SoHT meeting in Verona featured research on the identification and quantification of alcohol abuse biomarkers, their stability, and their correlation with exposure and other biomarkers.

Forensic Applications and Interpretation: One of the vital objectives of hair testing is its application in forensic investigations and legal proceedings. The SoHT meeting in Verona emphasized the significance of rigorous interpretation of analytical results and the need for standardized protocols. Manuscripts in this section present advancements in forensic toxicology, and have explored the challenges posed by emerging designer drugs and strategies to combat their proliferation. The pitfalls encountered when the exogenous/endogenous nature of a substance is questioned were presented and discussed. The special issue presents also manuscripts that delve into the ethical implications of drug testing in drug facilitated sexual assaults.

Clinical Applications of hair testing are witnessed by the insight on environmental tobacco smoke exposure, assessed by hair analysis in a population of students and the study of in utero-exposure to drugs of abuse through neonatal hair analysis. Exposure to drugs was also important in cases of child abuse/neglect, when the clinical purpose of hair testing merge with its forensic applications.

The legal framework surrounding hair testing and the achievement of guidelines to ensure fairness, accuracy, and confidentiality in drug testing practices have also been discussed,and the SoHT consensus on general hair testing and testing for drugs of abuse was presented at the meeting and published as a Letter to the Editor.

In conclusion, the special issue of Drug Testing and Analysis, featuring manuscripts from the SoHT–GTFI meeting in Verona 2022, reflects the remarkable advancements achieved in this field. The manuscripts provide valuable insights into novel analytical techniques, biomarkers, pharmacokinetics, forensic applications, and ethical considerations. As we embrace these advancements, we pave the way for a safer, healthier society, where drug testing and analysis serve as powerful tools in protecting public health and maintaining integrity in various sectors. The research presented in this special issue will undoubtedly shape the future of drug testing and analysis, fostering collaboration and inspiring further innovation in this crucial area of scientific inquiry.


Castella Drug Testing

Quickly find trusted local drug testing centers in Castella, CA — fast, convenient, and reliable every time!

Castella DOT Drug Testing

Quickly find a local DOT drug testing center in Castella, CA — fast, reliable, convenient nationwide service!

Castella DNA Testing

DNA testing for legal and non-legal purposes including child support, and child custody around Castella, CA.

Castella Industry Training

Including specimen collector training, DER training, reasonable suspicion training and much more in Castella, CA.v

Castella Hair Drug Testing

Get fast, accurate hair drug testing at our convenient Castella, CA locations—results you can trust, every time!

Castella Alcohol Testing

Fast, reliable alcohol testing to keep your workplace safe and compliant every single day in Castella, CA.

Castella Drug Testing Services

Reliable nationwide drug testing services ensuring accuracy, compliance, and quick results for businesses and individuals in Castella, CA.

Castella 5 Panel Drug Test

Accurate 5 panel drug testing with fast, confidential results—trusted by Castella, CA employers and individuals nationwide.

Castella 10 Panel Drug Test

Comprehensive 10 panel drug testing with fast, reliable results—trusted for Castella, CA workplace and personal testing needs.

Castella On Site Drug Testing

Convenient on-site mobile drug testing with fast, reliable results—saving time while keeping your Castella, CA workplace compliant.

Castella DOT Physicals

Certified DOT physicals with quick, reliable exams to keep Castella, CA drivers compliant and on the road with confidence.

DOT Consortium

Join our DOT consortium for hassle-free compliance, random testing management, and reliable driver safety solutions.


Frequently Asked Questions

A hair follicle drug test analyzes a small sample of hair to detect a history of drug use over time. Because drug metabolites are incorporated into hair as it grows, this method can show patterns of use instead of just recent exposure. It is frequently used for legal and court requirements, long-term monitoring, and high-trust workforce screening.
Standard hair drug testing typically reflects drug use over approximately a 90-day period, based on the length of hair collected at the time of testing. Longer hair can sometimes reflect a longer time frame, and extremely short hair can reduce that window.
Hair drug testing commonly screens for marijuana/THC, cocaine, opiates/opioids, amphetamines/methamphetamines, and PCP. In many cases, additional expanded panels may be requested to include other substances.
Yes. If the donor's head hair is too short or unavailable, body hair may be collected as an alternative. The collector will document the source of the sample. This allows testing even for individuals with recently cut or shaved head hair.
Yes. Hair drug testing is commonly used in court, probation, custody, and compliance matters because the collection process follows a documented chain of custody and the analysis is performed by a certified laboratory. Results are provided in a form that can be reviewed by legal and administrative authorities.
Yes. Individuals, parents, attorneys, employers, and probation programs can all request hair drug testing. A doctor's order is not required. Results are confidential and released only to the authorized requesting party.
Hair testing provides a longer look-back period than urine testing, making it useful when you need to demonstrate ongoing abstinence or identify repeated/recent substance use patterns over time rather than just recent exposure. It is frequently selected for legal, compliance, and custody-related documentation.
A small section of hair is cut by a trained collector in a discreet, controlled manner. The sample is sealed, documented, and sent to the laboratory under established chain-of-custody procedures so that the results can be defended if they are ever challenged.

Customer Reviews

Sweet and helpful

Trish was amazing and got me through the sytem very fast and swift. I had a hard time hearing her a couple of times, but she was super sweet and helpful throughout the process. Highly recommend her!

Sophia Schutze - 6/19/2024

Quick, knowledgeable and courteous

Quick, knowledgeable and courteous Janelle worked diligently to support me. I am recommending their services to anyone looking.

Greensboro Joseph - 11/19/2024

Very Fun and Easy

Trish last week and Tatiana this week, very fun and easy folks to deal with. Well be using them more and more in the future.

Tom O - 12/19/2024


(800) 221-4291