TOP 10 BEST DIAGNOSTIC TEST MEASUREMENT TOOLS

The Best Diagnostic Test Measurement Tools for Home & Auto

Find the best diagnostic test measurement tools, including OBD2 scanners, battery testers, and professional code readers for vehicles and home testing kits.

Whether you're a DIY mechanic looking to decipher that pesky 'Check Engine' light or need a reliable at-home test kit, having the right diagnostic measurement tools is essential. These devices provide crucial insights into the health of your vehicle or your body, saving you time and money on unnecessary professional visits.

Our comprehensive guide reviews the top diagnostic tools available, focusing primarily on automotive OBD2 scanners and multi-functional testers that combine code reading with battery analysis. We also feature highly-rated rapid home test kits for common illnesses, ensuring you have access to accurate and fast measurement results for various needs. Explore our selections to find the perfect tool for precise diagnostics.

ANCEL AD310 Classic Enhanced Universal OBD II Scanner Car Engine Fault Code Reader CAN Diagnostic Scan Tool, Read and Clear Error Codes for 1996 or...

ANCEL

4.6 (5,391 reviews)

Classic Enhanced Universal OBD II Scanner
Reads and clears engine fault codes (DTCs)
Compatible with all 1996 and newer OBD2 protocol vehicles
Simple plug-and-play operation with clear display

$23.99

View on Amazon →

OBD2 Scanner with Upgrade Battery Tester - Diagnostic Tool for Cars That Check Engine Light & Emissions Readiness Read and Clears Vehicle Error Cod...

OBD2

4.6 (826 reviews)

2-in-1 OBD2 Scanner and Battery Tester functionality
Checks engine light and emissions readiness status
Reads and clears vehicle error codes (DTCs)
Supports all OBD II protocol vehicles manufactured since 1996

$22.99

View on Amazon →

FOXWELL NT301 OBD2 Scanner Live Data Professional Mechanic OBDII Diagnostic Code Reader Tool for Check Engine Light Global Recycled Standard Global...

FOXWELL

4.5 (4,422 reviews)

Professional-grade OBDII Diagnostic Code Reader
Displays real-time Live Data streams
Quickly identifies the cause of the Check Engine Light (CEL)
Supports O2 sensor test and EVAP system test

$55.98

View on Amazon →

Innova 5210 OBD2 Scanner & Engine Code Reader, Battery Tester, Live Data, Oil Reset, Car Diagnostic Tool for Most Vehicles, Bluetooth Compatible wi...

Innova

4.5 (3,600 reviews)

Multi-functional OBD2 Scanner with Oil Reset capability
Integrated Battery Tester for comprehensive vehicle health
Bluetooth compatible with Innova's top car repair app
Displays live data and reads/clears engine codes

$89.99

View on Amazon →

Upgraded of NT301, FOXWELL NT301 Plus 2-in-1 OBD2 Scanner Battery Tester, Professional Check Engine Code Reader Car Diagnostic Tool, 12V Cranking C...

Upgraded

4.5 (4,760 reviews)

Advanced 2-in-1 OBD2 Scanner and Battery Tester
12V Cranking and Charging System Analyzer
Professional check engine code reader tool
Upgraded version of the popular FOXWELL NT301

$79.98

View on Amazon →

ANCEL AD410 PRO OBD2 Scanner and Battery Tester, 2-in-1 Car Diagnostic Tool, Check Engine Light, EVAP Test, Live Data, 12V Battery Analyzer with Cr...

ANCEL

4.6 (5,296 reviews)

ANCEL AD410 PRO 2-in-1 Car Diagnostic Tool
12V Battery Analyzer with Cranking & Charging System Test
Supports EVAP Test and displays Live Data streams
Suitable for both cars and motorcycles

$59.99

View on Amazon →

CorDx Tyfast at Home Flu A/B and COVID 19 Rapid Test Kit, Easy, Accurate, Fast Results in 10 Minutes, (10-Pack)

CorDx

4.5 (3,201 reviews)

Rapid at-Home Flu A/B and COVID-19 Combo Test Kit
Provides easy and accurate results
Fast results delivered in just 10 minutes
Convenient 10-pack for multiple uses

$59.21

View on Amazon →

Identify Diagnostics Drug Test Cups | 5 Pack | 12 Panel CLIA Waived Instant Urine Marijuana Drug Test Kit for AMP,BAR,BUP,BZO,COC,MDMA,MET,MOP|OPI,...

Identify

4.6 (5,159 reviews)

12 Panel Instant Urine Drug Test Kit
CLIA Waived for professional and home use
Tests for 12 common substances including THC and OXY
Comes in a convenient 5-pack

$21.79

View on Amazon →

TOPDON Bidirectional Scan Tool, 2025 New ArtiDiag900 Lite Automotive Diagnostic Tool for Full System, Scanner for Car with Active Test, 8 Reset, Wi...

TOPDON

4.3 (1,781 reviews)

Professional Bidirectional Scan Tool (Active Test)
Full System Automotive Diagnostic capability
Features 8 common maintenance reset functions
Wireless OBD2 connection for all vehicle types

$314.99

View on Amazon →

BinaxNOW COVID-19/Flu A&B Combo Self Test, Reliable COVID/Flu Home Test With 15 Minute Results, 2 Tests

BinaxNOW

3.8 (190 reviews)

BinaxNOW COVID-19/Flu A&B Combo Self Test
Reliable home test for quick diagnosis
Delivers results in just 15 minutes
Includes 2 tests for convenient use

$21.88

View on Amazon →

Frequently Asked Questions

What is the difference between an OBD2 scanner and a bidirectional scan tool?

An OBD2 scanner primarily reads and clears trouble codes (DTCs) and views live data. A bidirectional scan tool (like the TOPDON ArtiDiag900 Lite) is more advanced, allowing the user to send commands to the vehicle's systems (e.g., turning on the fuel pump or cycling the ABS pump) to perform active tests and deeper diagnostics.

Do I need a battery tester if my OBD2 scanner already reads voltage?

Yes, a dedicated battery tester or a 2-in-1 unit (like the FOXWELL NT301 Plus) does more than just read voltage. It performs a load test and analyzes the cranking and charging systems to determine the battery's overall health and capacity, which simple voltage readings cannot do.

Are at-home rapid diagnostic tests accurate?

Rapid diagnostic tests, such as those for COVID-19 and Flu, are generally highly accurate when used correctly, especially for detecting active infections. However, they are typically less sensitive than lab-based PCR tests. Always follow the instructions precisely for the most reliable results.

Final Thoughts

Investing in a high-quality diagnostic test measurement tool empowers you to quickly identify problems, whether they involve your car’s engine or your family’s health. For automotive needs, prioritize scanners with live data and battery testing capabilities to ensure comprehensive vehicle maintenance. For home testing, choose reliable, multi-panel kits that offer fast results. Browse our top-rated selections today and take control of your diagnostic needs!