Invitrogen Quant-iT assay kits utilize advanced fluorophores that become fluorescent upon binding to DNA, RNA, or proteins; the fluorescence intensity of the resulting complex depends directly on the amount of the target molecule in the sample.

  • Accuracy—Quant-iT technology gives more accurate results than can be obtained with UV absorbance readings, because the Quant-iT reagents only report the molecule of interest—there’s no interference from free nucleotides or other contaminants.
  • Sensitivity—Upon binding to DNA, RNA, or protein, the fluorescence of the Quant-iT dyes increases several hundred fold , giving a very high signal-to-background ratio. High signal and low background mean exceedingly high sensitivity—up to 1000 times more sensitive than absorbance readings.
  • Confidence—Confidence comes from knowing your assay is sensitive and accurate enough to quantitate even the most dilute or low-abundance samples, while still leaving enough of your biomolecule for successful downstream applications. With Quant-iT technology, you get the crucial quantitation data you need, without wasting your sample.

Quant-iT assay kits and reagents for use with microplate readers*—for 20–2,000 samples

Product Target Useful range † Ex/Em ‡ No. of assays Cat. No.
Quant-iT dsDNA High-Sensitivity (HS) Assay Kit
dsDNA 0.2–100 ng 510/527 1,000 Q33120
Quant-iT dsDNA Broad-Range (BR) Assay Kit
dsDNA 2–1,000 ng 510/527 1,000 Q33130
Quant-iT RNA Assay Kit
Quant-iT RNA Assay Reagent
RNA 5–100 ng 644/673 1,000 Q33140
Q32884
Quant-iT RNA Broad-Range BR Assay Kit
RNA 20–1,000 ng 644/63 1,000 Q10213
Quant-iT microRNA Assay Kit
Quant-iT microRNA Reagent
microRNA 1–500 ng 498/518 1,000 Q32882
Q32883
Quant-iT Protein Assay Kit
Protein 0.25–5 µg 470/570 1,000 Q33210

Quant-iT bulk reagents and kits for >2,000 samples

Product Target Useful range † Ex/Em ‡ No. of assays Cat. No.
Quant-iT PicoGreen dsDNA Assay Kit
Quant-iT PicoGreen dsDNA Reagent

dsDNA 0.2–100 ng 502/523 2,000 P7589
P7581
Quant-iT PicoGreen dsDNA Assay Kit
Quant-iT PicoGreen dsDNA Reagent
dsDNA 0.2–100 ng 502/523 2,000 P11496
P11495
Quant-iT OliGreen ssDNA Assay Kit
Quant-iT OliGreen ssDNA Reagent
ssDNA 1–200 ng 498/518 2,000 O11492
O7582
Quant-iT RiboGreen RNA Assay Kit
Quant-iT RiboGreen RNA Reagent
RNA 20–1,000 ng 500/525 2,000 R11490
R11491

* Invitrogen Quant-iT assays and reagents can also be used with the Invitrogen Qubit Fluorometer. †The useful range assumes a 1–20 µL sample volume in a 96-well microplate assay. ‡ Excitation (Ex) and emission (Em), in nm, of the Quant-iT detection reagent.