RNA-Seq Accessories for Metatranscriptomic Library Preparation and Quality Control

RNA-seq accessories covers the supporting consumables and reagents used alongside a core metatranscriptomic library preparation kit: rRNA depletion reagents, magnetic bead-based library cleanup and size selection, and quantification or quality-control tools for confirming library concentration and integrity before sequencing. These accessories address the practical, step-by-step needs of a real metatranscriptomics workflow beyond the core kit chemistry itself. Academic and core laboratories running microbiome RNA-seq studies can benefit from guidance when selecting accessory reagents for RNA enrichment, library cleanup, quantification, and quality assessment.

Explore available RNA-seq accessories or request a quotation by contacting customerservice@mbpinc.net. Our team can help identify the appropriate rRNA depletion, cleanup, size-selection, and quality-control reagents for your metatranscriptomic sequencing workflow.

RNA-seq accessories

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What are RNA-seq accessories?

RNA-seq accessories are the supporting consumables used alongside a core metatranscriptomic library preparation kit, including rRNA depletion reagents that reduce the ribosomal RNA dominating most total RNA extracts, magnetic bead-based reagents for library cleanup and size selection between preparation steps, and quantification or fragment-size quality-control tools used to confirm a library's concentration and integrity before committing it to a sequencing run.

What you will find:

Dual-Indexed UDI Primer Sets: High-purity Unique Dual Index (UDI) primers designed to eliminate index hopping and ensure accurate demultiplexing during high-throughput NGS library preparation.
96-Index Primer Plates: Nuclease-free, high-diversity primer configurations optimized for scalable parallel processing and the detection of rare microbial transcripts with maximum precision.

How to choose RNA-seq accessories

Match your rRNA depletion reagent to your sample's species complexity

A depletion reagent validated for human and common bacterial species works well for many host-associated samples, while a depletion kit specifically designed for mixed, complex bacterial populations is needed for more diverse environmental or microbiome community samples.

Use magnetic bead cleanup for size selection between library prep steps

Magnetic bead-based cleanup reagents remove unwanted small fragments and reaction components between enzymatic steps in library preparation, and the bead-to-sample ratio used can be adjusted to select for a specific fragment size range appropriate to your sequencing platform.

Confirm library quantification method matches your downstream platform requirements

A fluorometric or fragment-analysis-based quantification method provides the library concentration data needed to pool multiple samples accurately for multiplexed sequencing, and using a method appropriate to your specific library type avoids over- or under-loading the sequencer.

Check fragment size distribution before sequencing to catch problems early

Running a quality-control check of library fragment size distribution, using an instrument like a Bioanalyzer or similar fragment analyzer, helps catch a library prep problem, such as adapter dimer contamination, before committing the sample to a full sequencing run.

Plan for accessory compatibility with degraded or low-input RNA samples

Some accessories and protocols accommodate degraded RNA with low RNA integrity number (RIN) scores, such as RNA from challenging sample types, though performance may be somewhat reduced compared with high-quality, intact RNA input.

Specifications context

A streamlined rRNA depletion accessory can effectively deplete multiple rRNA species in a single-tube reaction, reducing the hands-on accessory steps needed compared with older multi-step depletion protocols, while still requiring downstream library cleanup and quantification accessories regardless of which depletion method is used. As of 2026, fragment analyzer and similar QC instrumentation remain a standard accessory-stage check before sequencing, helping confirm library quality issues are caught and addressed prior to committing limited sequencing capacity to a problematic sample.

Contact the helpful team at MBP Inc. today to request a quote for your RNA-Seq accessory needs.

FAQ

A core library prep kit provides the main enzymatic chemistry for converting RNA into a sequencing-ready library, while RNA-seq accessories cover the supporting steps around that core chemistry, such as rRNA depletion, magnetic bead cleanup between steps, and library quantification or QC before sequencing. Both are necessary for a complete, functional metatranscriptomics workflow, even though they're often sold or sourced as separate products.

rRNA depletion reagents are often validated and optimized for a defined set of species, such as common human and bacterial gut species, and may not perform as reliably on highly diverse environmental or microbiome samples containing many different organisms with varying rRNA sequences. A depletion reagent specifically designed for mixed, complex bacterial populations addresses this broader diversity more effectively.

Magnetic bead-based cleanup reagents bind library fragments based on size, and adjusting the ratio of beads to sample changes which fragment sizes are retained versus discarded, allowing size selection for a fragment range appropriate to your specific sequencing platform. This same bead chemistry is also used more generally between enzymatic steps to remove unwanted small fragments and leftover reaction components.

Accurate library concentration data, generated through a fluorometric or fragment-analysis-based quantification method, is needed to pool multiple samples in the correct proportions for multiplexed sequencing, since over- or under-loading a specific sample relative to others in the pool can result in uneven sequencing depth across your samples. Using a quantification method appropriate to your specific library type helps avoid this imbalance.

Running a fragment size distribution check, using an instrument like a Bioanalyzer or similar fragment analyzer, can reveal library preparation problems such as adapter dimer contamination or unexpected fragment size shifts before the sample is committed to a full sequencing run. Catching these issues at the QC stage avoids wasting sequencing capacity on a library with an underlying preparation problem.

Some accessories and protocols can accommodate degraded RNA with low RNA integrity number (RIN) scores, such as RNA extracted from challenging sample types, though performance, including rRNA depletion efficiency and final library quality, may be somewhat reduced compared with high-quality, intact RNA input. Checking a specific accessory's documented compatibility with degraded RNA is worth doing if your samples are known to be compromised.

In many cases, accessories like magnetic bead cleanup reagents and standard quantification methods are broadly compatible across different core library prep kits, but rRNA depletion reagents in particular are often kit-specific or at least validated together with a specific core chemistry. Checking compatibility between your chosen core kit and any third-party accessories helps avoid unexpected performance issues.

Yes, MBP offers academic and bulk pricing for rRNA depletion reagents, magnetic bead cleanup kits, and library quantification and QC tools supporting metatranscriptomic RNA-seq workflows. Orders ship from MBP's US office in Houston, Texas, with stock available in both USD and CAD.

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