Tags · Technique

LOD & LOQ

Limits of detection and quantitation.

41 topics 16 solved Synonyms: lod Group: Technique

41 topics · page 1 of 2

Topic	Participants	Replies	Views	Activity
What I would want from a home test that does not exist yet Analytics › Home & field testing ELISA documentation quality LOD & LOQ Solved Pinned The question in the title: What I would want from a home test that does not exist yet I will give what I have already checked below so nobody repeats it. A documentation question rather than an analytical…	+46	50	8k	6h
Reading a home test result without over-claiming Analytics › Home & field testing ELISA documentation quality LOD & LOQ third-party testing Reading a home test result without over-claiming — setting out what I have, and where I think it stops being reliable. Working through the identity arithmetic and I would like it checked. retatrutide has a…	+124	137	19k	7h
Coming back to: Lateral-flow and colorimetric approaches: the specificity problem Analytics › Home & field testing third-party testing LOD & LOQ documentation quality ELISA Solved On the subject in the title: Lateral-flow and colorimetric approaches: the specificity problem Working notes rather than a conclusion. I would like to understand what this number means before I repeat it…	+77	89	16k	9h
What consumer-accessible tests can and cannot determine — a second dataset Analytics › Home & field testing ELISA LOD & LOQ third-party testing documentation quality Solved What consumer-accessible tests can and cannot determine — a second dataset I have a specific reason for asking rather than idle curiosity, and the context is below. Posting the method first, because I know…	+117	131	45k	10h
Cost versus information: making the trade-off explicitly Analytics › Home & field testing LOD & LOQ third-party testing ELISA documentation quality Cost versus information: making the trade-off explicitly Writing it up because I had to work it out twice and would rather nobody else did. Working through the identity arithmetic and I would like it checked.…	+2	6	12k	11h
A comparison of home results against a laboratory result on the same vial — does this still hold? Analytics › Home & field testing ELISA third-party testing LOD & LOQ documentation quality Solved A comparison of home results against a laboratory result on the same vial — does this still hold? I have a specific reason for asking rather than idle curiosity, and the context is below. Working through the…	+2	6	15k	11h
Reflectance and photometric devices: precision in practice — a second dataset Analytics › Home & field testing ELISA LOD & LOQ documentation quality Reflectance and photometric devices: precision in practice — a second dataset — setting out what I have, and where I think it stops being reliable. I would like to understand what this number means before I…	+75	82	17k	12h
Revisiting: Spike-and-recover accuracy for a peptide assay Analytics › Method validation LOD & LOQ system suitability stability-indicating method linearity Revisiting: Spike-and-recover accuracy for a peptide assay — setting out what I have, and where I think it stops being reliable. I would like to understand what this number means before I repeat it anywhere.…		2	6.8k	21h
What I would want from a home test that does not exist yet — what changed since Analytics › Home & field testing third-party testing LOD & LOQ documentation quality ELISA Solved Asking directly, because I could not find a straight answer: What I would want from a home test that does not exist yet — what changed since Posting the method first, because I know what the first three…	+101	111	1.9k	21h
What a simple presence test is genuinely useful for Analytics › Home & field testing documentation quality ELISA third-party testing LOD & LOQ Solved What a simple presence test is genuinely useful for — that is the question, and I have not found it answered plainly anywhere I have looked. Working through the identity arithmetic and I would like it…		2	58	1d
Revisiting: Can a home kit substitute for a laboratory report? A careful no Analytics › Home & field testing ELISA LOD & LOQ documentation quality third-party testing Revisiting: Can a home kit substitute for a laboratory report? A careful no — setting out what I have, and where I think it stops being reliable. Working through the identity arithmetic and I would like it…	+50	56	9.8k	1d
Specificity, linearity, accuracy, precision, range, robustness — with real criteria Analytics › Method validation precision & repeatability LOD & LOQ linearity Specificity, linearity, accuracy, precision, range, robustness — with real criteria Writing it up because I had to work it out twice and would rather nobody else did. I would like to understand what this…	+44	48	12k	1d
Validating a method you did not develop Analytics › Method validation precision & repeatability recovery linearity stability-indicating method On the subject in the title: Validating a method you did not develop Working notes rather than a conclusion. I would like to understand what this number means before I repeat it anywhere. A VendorInvestigate…	+10	14	15k	3mo
Sample handling between despatch and injection Analytics › Method validation stability-indicating method LOD & LOQ linearity precision & repeatability Sample handling between despatch and injection Writing it up because I had to work it out twice and would rather nobody else did. Posting the method first, because I know what the first three replies will…	+63	68	2.4k	3mo
Second pass at: Robustness: the parameters worth deliberately varying Analytics › Method validation linearity LOD & LOQ recovery system suitability On the subject in the title: Second pass at: Robustness: the parameters worth deliberately varying Working notes rather than a conclusion. I would like to understand what this number means before I repeat it…	+61	66	9.5k	3mo
Spike-and-recover accuracy for a peptide assay Analytics › Method validation linearity system suitability stability-indicating method LOD & LOQ Wiki Posting this under the heading it deserves: Spike-and-recover accuracy for a peptide assay Everything below is what sits behind that. A documentation question rather than an analytical one. I have a…	+121	126	1.5k	4mo
About the Method validation category Analytics › Method validation stability-indicating method linearity LOD & LOQ Pinned Wiki Specificity, linearity, precision, accuracy, robustness, system suitability, and why two labs disagree. This post is a community wiki: any member at trust level 3 or above can edit it, and every edit is…	+1	5	468	5mo
Why one laboratory's 98.4% and another's 96.1% may not contradict — one year on Analytics › Method validation LOD & LOQ system suitability linearity stability-indicating method Asking directly, because I could not find a straight answer: Why one laboratory's 98.4% and another's 96.1% may not contradict — one year on Working through the identity arithmetic and I would like it…	+10	14	13k	5mo
Can a home kit substitute for a laboratory report? A careful no Analytics › Home & field testing third-party testing documentation quality LOD & LOQ ELISA Solved Asking directly, because I could not find a straight answer: Can a home kit substitute for a laboratory report? A careful no I would like to understand what this number means before I repeat it anywhere. A…	+122	131	1.7k	5mo
Reading a home test result without over-claiming — what changed since Analytics › Home & field testing third-party testing documentation quality LOD & LOQ ELISA Pinned Closed On the subject in the title: Reading a home test result without over-claiming — what changed since Working notes rather than a conclusion. Working through the identity arithmetic and I would like it checked.…		2	12k	6mo
Revisiting: Sample handling between despatch and injection Analytics › Method validation recovery precision & repeatability linearity LOD & LOQ Posting this under the heading it deserves: Revisiting: Sample handling between despatch and injection Everything below is what sits behind that. Posting the method first, because I know what the first three…	+5	9	1.1k	6mo
Specificity, linearity, accuracy, precision, range, robustness — with real criteria — a second dataset Analytics › Method validation linearity LOD & LOQ recovery Closed On the subject in the title: Specificity, linearity, accuracy, precision, range, robustness — with real criteria — a second dataset Working notes rather than a conclusion. Working through the identity…	+53	58	7.5k	6mo
What a stability-indicating method is and how you demonstrate one Analytics › Method validation linearity precision & repeatability LOD & LOQ Asking directly, because I could not find a straight answer: What a stability-indicating method is and how you demonstrate one Working through the identity arithmetic and I would like it checked. retatrutide…		4	57k	6mo
Why one laboratory's 98.4% and another's 96.1% may not contradict Analytics › Method validation stability-indicating method LOD & LOQ linearity Solved Wiki Why one laboratory's 98.4% and another's 96.1% may not contradict I have a specific reason for asking rather than idle curiosity, and the context is below. A documentation question rather than an analytical…	+28	37	457	7mo
An inter-laboratory comparison on one lot, tabulated — what changed since Analytics › Method validation stability-indicating method LOD & LOQ system suitability precision & repeatability An inter-laboratory comparison on one lot, tabulated — what changed since — setting out what I have, and where I think it stops being reliable. I would like to understand what this number means before I…	+24	28	3.3k	7mo
LOD and LOQ: definitions people get wrong Analytics › Method validation precision & repeatability recovery stability-indicating method linearity Closed LOD and LOQ: definitions people get wrong — setting out what I have, and where I think it stops being reliable. A documentation question rather than an analytical one. I have a certificate in front of me that…		2	43k	8mo
Coming back to: Why quantitation is the hard part, not detection Analytics › Home & field testing third-party testing documentation quality ELISA LOD & LOQ Why quantitation is the hard part, not detection — that is the question, and I have not found it answered plainly anywhere I have looked. Posting the method first, because I know what the first three replies…	+86	92	54k	8mo
Lateral-flow and colorimetric approaches: the specificity problem Analytics › Home & field testing LOD & LOQ documentation quality ELISA Lateral-flow and colorimetric approaches: the specificity problem — setting out what I have, and where I think it stops being reliable. A documentation question rather than an analytical one. I have a…		2	4k	9mo
An inter-laboratory comparison on one lot, tabulated Analytics › Method validation linearity LOD & LOQ precision & repeatability system suitability Closed On the subject in the title: An inter-laboratory comparison on one lot, tabulated Working notes rather than a conclusion. Working through the identity arithmetic and I would like it checked. semaglutide has a…		3	17k	10mo
Second pass at: LOD and LOQ: definitions people get wrong Analytics › Method validation recovery precision & repeatability linearity LOD & LOQ Posting this under the heading it deserves: Second pass at: LOD and LOQ: definitions people get wrong Everything below is what sits behind that. Working through the identity arithmetic and I would like it…	+47	51	40k	10mo

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