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For Lonza’s MycoAlert® Mycoplasma Detection Assays is it possible to convert the B/A value of positive control included in the MycoAlert® Assay Control Set to CFU of mycoplasma?

The MycoAlert® and MycoAlert® PLUS Assay are not quantitative so you cannot relate the ratio to an actual value. Different mycoplasma species will give different ratios due to different levels of expression of the enzymes we measure...

How often do mycoplasma contaminations occur in cell cultures?

A conservative estimate states that between 15-35% of all continuous cell cultures are contaminated with mycoplasma (Drexler HG, Uphof CC; 2002), some estimates are even higher (up to 80 % in some countries (Koshimizu K, Kotani H; 1981).

Is it necessary to remove antibiotics for some time from the cell culture medium before taking sample to test medium for presence of mycoplasma using the MycoAlert® Mycoplasma Detection Kit?

The MycoAlert® Mycoplasma Detection Assay was designed to “fit” in with normal tissue culturing practices. It was developed in fully supplemented culture media containing antibiotics and DOES NOT require a period of culture without antibiotics...

What kind of effects could a mycoplasma contamination have on my cells?

Mycoplasma contamination can: > Inhibit cell metabolism > Cause cell death > Induce morphological alterations > Alter DNA, RNA, and protein synthesis > Induce chromosomal aberrations > Cause increased sensitivity to inducers...

Do you have recommendations for the type of samples used for the MycoAlert® Mycoplasma Detection Kit and the MycoAlert® PLUS Mycoplasma Detection Kit? And do you have recommendations related to sample storage?

The MycoAlert® Mycoplasma Detection Kit and the MycoAlert® PLUS Mycoplasma Assay require the use of cell free supernatant only! Cells MUST be removed at 200xg for 5 mins.For optimal assay performance, supernatant should be tested...

How many mycoplasma species exist? Which are the usual suspects in cell culture?

More than 180 species have been identified of which 20 distinct Mycoplasma and Acholeplasma species from human, bovine and swine have been isolated from cell culture. There are 6 species that account for 95% of all mycoplasma infections (M.orale...

What are inhibitors of the MycoAlert® Mycoplasma Detection Kit

The main inhibitors of the MycoAlert® Reaction would be things that affect the luciferase detection. Agents which potentially quench the light signal include high levels of salt, EDTA and other chelating agents, very high levels of sera,...

Do antibiotics effect the MycoAlert® and MycoAlert® PLUS Mycoplasma Detection Kits?

Gentamycin and all commonly used antiboitics do not effect MycoAlert® and MycoAlert® PLUS Mycoplasma Detection Assay. We have tested amphotericin, ampicillin, cephalothin, kanamycin, lincomycin, in addition to gentamycin, penicillin and streptomycin...

How long is the MycoAlert® Mycoplasma Detection Assay signal stable?

Please follow the protocol exactly as written – add reagent, wait 5 min and read, add substrate, wait 10 minutes and read again.

When performing the MycoAlert® Mycoplasma Detection Assay, why is it necessary to spin out the cells?

It is highly recommended that the samples are spun down prior to testing. If cells are present in the assay they will contribute to the initial reading producing a higher background. This in turn can decrease the difference between the background and...

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