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Dual-Labeled Hydrolysis Probes (TaqMan®-Style qPCR Probes)

Bio-Synthesis provides custom dual-labeled hydrolysis probes for qPCR, RT-qPCR, SNP genotyping, multiplex assays, pathogen detection, viral load testing, gene expression, mutation detection, and real-time PCR assay development using TaqMan®-style probe chemistry.

5′ Reporter / 3′ Quencher TaqMan-Style qPCR RT-qPCR Multiplex Panels BHQ / QSY / IBFQ FAM / HEX / VIC / ROX / Cy5 HPLC / MS QC RUO to Scale-Up
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Overview How It Works Probe Types Guidelines Dye Table FAQ Request Quote
Overview

Custom dual-labeled hydrolysis probes for sequence-specific qPCR detection

Dual-labeled hydrolysis probes are sequence-specific fluorescent oligonucleotide probes used in real-time PCR assays to detect amplification during polymerase extension. Bio-Synthesis supports custom TaqMan®-style qPCR probe design, reporter/quencher pairing, MGB and LNA-enhanced probe options, multiplex PCR probe sets, purification, analytical QC, and scale-up manufacturing for research-use assay development.

Probe Build

Configured around your target sequence, assay format, instrument channels, and QC requirements.

Reporter / Quencher

5′ reporter with 3′, internal, or double-quenched formats.

Enhanced Specificity

MGB and LNA options for shorter probes and mismatch discrimination.

Manufacturing Support

HPLC, PAGE, MS, CoA, and lot-linked documentation options.

Polymerase Reporter Quencher Reporter Release = Signal Probe cleavage separates reporter from quencher

Common Uses

Useful for assays that require sequence-specific signal and clean multiplex detection.

qPCR / RT-qPCR

Gene expression, viral load, and low-copy target detection.

Genotyping

SNP, allele discrimination, and mutation screening workflows.

Multiplex Panels

Pathogen, oncology, pharmacogenomics, and CNV assay development.

Best for: sequence-specific real-time PCR detection, molecular diagnostics research, multiplex qPCR, SNP genotyping, and RT-qPCR workflows.
Compared with intercalating dye assays: hydrolysis probes improve specificity, multiplexing capability, and background control.
How Hydrolysis Probes Work

Reporter release during primer extension creates the qPCR signal

A dual-labeled probe stays quenched while intact. Signal appears only after target binding and probe cleavage, which makes this format useful for real-time PCR, RT-qPCR, genotyping, pathogen detection, and multiplex assays.

1

Target Hybridization

The probe binds between the forward and reverse primers on the target amplicon while reporter and quencher remain close together.

2

Polymerase Cleavage

During extension, polymerase cleaves the probe that is hybridized to the target strand.

3

Fluorescence Detection

The reporter separates from the quencher, producing fluorescence that increases with amplification.

Extension Reporter separated = measurable signal
Probe Types

Hydrolysis probe formats: TaqMan®-style, MGB, and LNA-enhanced designs

For this page, the Probe Types section is focused on the two most relevant TaqMan-style categories from the current qPCR probe page: standard hydrolysis probes and MGB/LNA-enhanced probes.

Hydrolysis Probes

TaqMan®-style dual-labeled qPCR probes

Standard hydrolysis probes carry a 5′ reporter and 3′ quencher. They are broadly used for real-time PCR, RT-qPCR, pathogen detection, gene expression, viral load, and multiplex qPCR assays.

Best for
General-purpose qPCR, RT-qPCR, screening, expression, and pathogen panels.
Quenchers
BHQ-1/2/3, QSY, IBFQ TAMRA, or application-specific dark quenchers.
Strength
Broad dye compatibility, strong signal-to-noise, and straightforward multiplex design.
[DL-qPCR] 5′ Reporter / 3′ Quencher BHQ / QSY / IBFQ

MGB & LNA-Enhanced Probes

shorter, high-Tm, higher-specificity probe designs

MGB and LNA-enhanced hydrolysis probes increase duplex stability, allowing shorter probe designs with improved mismatch discrimination. They are useful for SNP assays, mutation detection, AT-rich targets, and difficult sequence regions.

MGB
Raises probe Tm to support shorter probes and tighter quenching, including MGB-NFQ formats.
LNA
Boosts affinity and specificity at selected positions, especially in AT-rich or structured regions.
Best for
SNP genotyping, mutation screening, short amplicons, and high-specificity qPCR assays.
[MGB-qPCR] [LNA-qPCR] SNP / Mutation Assays
Design Guidelines

Hydrolysis probe design guidelines for qPCR assay performance

A strong TaqMan-style hydrolysis probe design should balance sequence placement, probe Tm, reporter/quencher pairing, multiplex channel separation, and purification quality.

Sequence Design

Tm, length, GC balance, target placement

Probe placement should support stable binding during extension while avoiding secondary structure, repetitive regions, and poor target accessibility.

Length

Usually 18–35 bases, depending on target and probe chemistry.

Tm

Usually above primer Tm for stable binding.

SNPs

MGB or affinity-enhanced probes can improve mismatch discrimination.

Signal Control

reporter brightness, quencher efficiency, background

Reporter and quencher compatibility controls background fluorescence, dynamic range, and multiplex performance across qPCR instruments.

Reporter

FAM, HEX, VIC, TET, ROX, Cy3, Cy5, ATTO.

Quencher

BHQ-1/2/3, QSY, IAbRQSp, 3IABkFQ.

Long probes

Consider internal or double-quenched formats.

Purity & QC

purification, identity, dye loading, documentation

Dye-labeled probes often benefit from higher-purity workflows because truncated or unlabeled material can increase background signal.

Purity

HPLC is commonly recommended.

Identity

Mass spectrometry available when applicable.

Output

CoA, lot data, OD260, and analytical QC options.

Recommended Design Direction

  • Keep amplicons compact for efficient qPCR amplification
  • Place the probe between primers and avoid strong secondary structure
  • Use spectrally separated dyes for multiplex panels
  • Use HPLC purification for final dye-labeled assay probes

Common Issues to Avoid

  • Reporter dye too close to quenching sequence effects
  • Overlapping emission channels in multiplex assays
  • Long probes without adequate quenching control
  • Using low-purity probe material for sensitive assays
Dye & Quencher Selection

Reporter dye and quencher selection for hydrolysis probes

Dye and quencher selection should be matched to instrument filters, target abundance, multiplex design, background tolerance, and whether the assay uses singleplex or multi-channel detection.

Common qPCR channels

Use spectrally separated reporters and compatible dark quenchers to improve multiplex performance and reduce bleed-through.

FAM HEX VIC TET ROX Cy5 BHQ-1 BHQ-2 BHQ-3 QSY IBFQ
Multiplex tip: balance dye brightness, target abundance, and channel separation instead of selecting dyes by brightness alone.
Channel Range Common Reporters Typical Quenchers Best-Fit Uses Design Notes
Blue / Green FAM BHQ-1, QSY, IBFQ Singleplex qPCR and high-sensitivity targets Strong default choice for hydrolysis probe assays.
Green / Yellow HEX, VIC, TET BHQ-1, QSY Second channel in multiplex panels Useful with FAM when instrument filters separate channels cleanly.
Orange / Red ROX, Texas Red BHQ-2, QSY Multiplex qPCR, reference-compatible assays Confirm whether ROX is used as passive reference on the platform.
Far Red Cy5, ATTO 647N BHQ-2, BHQ-3 Higher-plex panels and low-overlap detection Helpful when separating signal from FAM/HEX/VIC channels.
Double-Quenched FAM, HEX, Cy5 Internal + terminal quencher Longer probes or lower-background assays Can improve signal-to-noise by suppressing background fluorescence.
Workflow

qPCR hydrolysis probe workflow

A structured workflow from assay review through chemistry selection, probe synthesis, analytical QC, and delivery formatting.

From target sequence to assay-ready probe

Bio-Synthesis can begin with a final probe sequence, target region, amplicon design, or multiplex panel concept.

Review → Build → Verify → Deliver
Step 01

Assay Review

Confirm target, amplicon, assay type, instrument channels, multiplex needs, and expected performance goals.

Step 02

Chemistry Match

Select reporter dye, quencher, MGB or LNA enhancement, internal quencher, purification level, and delivery format.

Step 03

Synthesis & QC

Manufacture, purify, quantify, and verify the probe using HPLC, PAGE, MS, dye loading review, or CoA documentation.

Step 04

Formatted Delivery

Receive probes in tube, plate, pooled, normalized, lyophilized, liquid, or scale-up-ready formats.

Result: a dual-labeled hydrolysis probe package aligned with your assay design, dye/quencher chemistry, instrument channels, purification level, and documentation needs.
Quality & Documentation

Purification, analytical QC, and documentation support

Dual-labeled probe deliverables can be configured for routine research, assay development, or scale-up programs.

Purification

  • Desalt for screening projects
  • HPLC for dye-labeled probes
  • PAGE for high-resolution cleanup
  • Custom purification pathways

Analytical QC

  • OD260 quantitation
  • Analytical HPLC or UPLC
  • Mass spectrometry where applicable
  • Dye loading and purity review

Documentation

  • Certificate of Analysis
  • Lot-linked documentation
  • Endotoxin testing on request
  • RUO to GMP-like support

Frequently asked questions about dual-labeled hydrolysis probes

FAQ

Why use double-quenched hydrolysis probes?
 Double-quenched probes use internal and terminal quenching to reduce background fluorescence. They can be helpful for longer probes, low-copy targets, multiplex assays, or workflows that require stronger signal-to-noise.
What information should I provide for a quote?
 For a faster quote, provide the target or amplicon sequence, probe sequence if available, reporter dye, quencher preference, assay type, instrument channels, multiplex requirements, scale, purification, and QC documentation needs.
What is the difference between TaqMan® probes and hydrolysis probes?
 TaqMan® is a commonly used trademarked term associated with hydrolysis probe chemistry. “Dual-labeled hydrolysis probe” or “TaqMan®-style qPCR probe” is the broader descriptive term for this probe format.
Which dye and quencher should I choose?
 The best pair depends on your qPCR instrument channels and multiplex design. Common reporters include FAM, HEX, VIC, ROX, and Cy5. Common quenchers include BHQ-1, BHQ-2, BHQ-3, QSY, IAbRQSp, and 3IABkFQ.
Can Bio-Synthesis support multiplex qPCR probes?
 Yes. Bio-Synthesis can help with dye/channel selection, quencher pairing, probe balancing, purification, analytical QC, and plate or tube delivery formats for multiplex qPCR probe sets.
What purification is recommended for dye-labeled hydrolysis probes?
 HPLC purification is commonly recommended for dye-labeled hydrolysis probes. PAGE purification, analytical HPLC/UPLC, mass spectrometry, dye loading review, and CoA documentation can be added when needed.
What is a dual-labeled hydrolysis probe?
 A dual-labeled hydrolysis probe is a sequence-specific oligonucleotide labeled with a fluorescent reporter and quencher. During qPCR extension, polymerase cleavage separates the reporter from the quencher and produces fluorescence signal.
When should MGB or LNA-enhanced probes be used?
 MGB or LNA-enhanced probes are useful when a shorter probe is needed, when the target is AT-rich, or when sharper mismatch discrimination is required for SNP genotyping, allele discrimination, or mutation detection.
More FAQ'sAll FAQ's
Contact & Quote Request

Ready to design your dual-labeled qPCR probes?

For the fastest quote, share your target sequence or amplicon, probe sequence if available, reporter dye, quencher preference, assay type, instrument channels, multiplex requirements, scale, purification, and QC documentation needs.
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Hydrolysis Probes
Dye / Quencher
QC + Documentation
Dual-Labeled qPCR ProbesReporter • Quencher • Purification • QC

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Discuss probe Tm, reporter dye, quencher, MGB, internal quencher, multiplex channels, and QC requirements.

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Greetings Researchers,

Please be advised that any information, guidelines, writeups, and oral/video/graphic content on our website are intended solely as general guidelines.
It is the researcher's sole responsibility to conduct thorough research on the designs of the products intended for their experiments before submitting
their designs to Biosynthesis for review of production feasibility.
Thank you for your understanding.

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