How to convert HIV Copies/mL to IU/mL ?

I am developing HIV Viral Load Detection Assay, in that my Quantitative Standards are in Copies/mL, but I want to convert it to International Unit (IU)/mL as WHO recommendation to give results in...

08 September 2019 2,928 4 View

Problem in HIV RT PCR, every samples and water also coming positive at same time. Can anyone suggest what is the problem.?

I am using primer & Probe concentration 10 uM and using 0.5 uL in 25 uL reaction PCR setup. I have used so many different water but each water coming positive. Its might be primer dimer but...

01 February 2019 4,049 11 View

Which stabilizer we can used to stabilized RT PCR Master Mix?

I have developed RT PCR mastermix , now its required to add stabilizer in it? if yes which stabilizer we can use at which concentration.

11 December 2018 4,533 10 View

Which are the suitable gene target for DNA Extraction Internal control for RT PCR of DNA Virus?

We want Internal Control for DNA RT PCR, which should be act as a DNA extraction control.

05 June 2018 3,586 4 View

What is the best way to design DNA/RNA Extraction control for RT PCR testing?

I want to know the artificial gene or strain which can be use as a DNA/RNA extraction control, and will lead you to RT PCR testing for any viral DNA or RNA.

03 April 2018 5,148 4 View

I am not getting Perfect Sigmoidal curve in RT PCR. Can any one suggest the Possible reasons?

Please suggest possible modifications in experiments.

10 November 2017 221 6 View

Can any one know stabilizer for PCR Master Mix?

I want to stabilize the RT PCR Master Mix at Room Temperature . Please suggest if any one having same experience or some stabilizer i can try.

09 October 2017 4,404 3 View

What is the best way to detect MicroRNA , Sybr Green or Taqman?

10 November 2015 821 8 View

Problem in R for generating Heatmap.

i am getting following error in R while generating heatmap. Error in .External.graphics(C_layout, num.rows, num.cols, mat, as.integer(num.figures), : invalid graphics state Please Guide me.

01 February 2015 7,641 3 View

Problem in Real Time PCR?

31 December 2014 5,245 4 View

Standard curve shifting over time. How do I stabilise the ELISA?

24 February 2021 1,365 3 View

What are the conflicts between EIA and environmental engineers and lawyers?

Environmental Impact Assessment (EIA) does not live up to the expectation of environmental lawyers and environmental engineers. In your own opinion, how can the EIA process therefore be made more...

03 February 2021 1,329 6 View

How to prepare secondary antibody from lyophilized antibody?

So I'm new to lab research and learning Western Blots these days. I ordered my secondary antibody and it arrived in a powdered form. Here is the...

27 January 2021 5,402 3 View

Colorimteric and enzymatic method ?

First of all, thank you for your consideration about this question. I've been working on development of in-vitro diagnostic medical device as research engineer since 2013. Especially, my major is...

14 January 2021 3,885 4 View

Which syringe filters (e.g., PTFE, MCE, PVDF, CA, PES, etc.) are the best to filter TBS/PBS buffer (pH 7.5-8.5) and glycine buffer (pH 2-3) solutions?

I intend to purify antibodies from serum using the affinity procedure, and I need to filter the binding (TBS/PBS) and elution (Glycine) buffers before applying them to my solution.

06 January 2021 5,769 3 View

Greiner Bio or Corning Costar plates for ELISA?

09 December 2020 237 2 View

What is optimal buffer for saliva immunoglobulins testing with lateral flow immunoassay?

Hi to everyone! Does anybody know optimal buffer for detecting HIV-IgG with lateral flow immunoassay using saliva as a specimen type? I think that i need a buffer for LFIA becouse saliva too...

16 November 2020 1,520 3 View

Can primary antibodies bind to analyte coupled magnetic beads directly if the coupling was unsuccessful ?

I am working with multiplex immunoassay. As I am new into multiplexing I am facing some problem. I have coupled Protein X to carboxylated magnetic beads (BioRad) using EDC-NHS. Now, while...

08 November 2020 9,911 7 View

Which organic solvent should I choose to make a cortisol stock solution for immunoassay?

Hi everyone, I plan to make my own cortisol standards for immunoassay. Hydrocortisone (cortisol) is soluble in organic solvents, such as ethanol, methanol, DMF etc., but I'm not sure which one...

01 September 2020 3,442 4 View

How can I make the Gold-Antibody conjugate stable ?

I did competitive lateral flow immunoassay using gold bridge method. Antigen-fluorescence bead and immobilized antigen on the PMMA membrane is no problem to measure the optical absorption at 37...

24 August 2020 2,684 4 View