I tried 10 on-line dictionaries:
results:
1 gave Analyte = The substance being measured in an analytical procedure.
9 gave analyte not listed
10 gave measurand not listed.
So clearly measurand is made up and analyte is probably made up as well.
However, that means that:
[1] alkaline phosphatase NOT analyte because you measure its activity
> [2] cholesterol analyte
> [3] Ca125 analyte
> [4] free T4 analyte or not depending whether you believe the assay does what it says
> [5] HbA1c analyte or not because HbA1c is not really a sinle entity
> [6] oestradiol analyte
> [7] Troponin I analyte
> [8] TSH analyte
> [9] SHBG analyte
> [10] sodium analyte
*************************************************************************************
Prof. Tim Reynolds,
Clinical Chemistry Department,
Queens Hospital,
Belvedere Rd.,
Burton-on-Trent,
STAFFORDSHIRE,
DE13 0RB,
UK.
tel: 01283 511511 ext. 4035
fax: 01283 593064
email: [log in to unmask]
alternative email for the all too frequent occasions when the NHS email connection doesn't work:
[log in to unmask]
**************************************************************************************
IMPORTANT: This email is intended for the use of the individual addressee(s)named above and may contain information that is confidential privileged or unsuitable for overly sensitive persons with low self-esteem, no sense of humour or irrational religious beliefs. If you are not the intended recipient, any dissemination, distribution or copying of this email is not authorized (either explicitly or implicitly) and constitutes an irritating social faux pas. Unless the word absquatulation has been used in its correct context somewhere other than in this warning, it does not have any legal or grammatical use and may be ignored. No animals were harmed in the transmission of this email, though the kelpie next door is living on borrowed time, let me tell you. Those of you with an overwhelming fear of the unknown will be gratified to learn there is no hidden message revealed by reading this backwards, so just ignore that Alert Notice from Macroshaft. However, by pouring a complete circle of salt around yourself and your computer you can ensure that no harm befalls you and your pets. If you have received this eMail in error, please add some nutmeg and egg whites, whisk, and place in a warm oven for 40 minutes.
> -----Original Message-----
> From: Clinical biochemistry discussion list
> [mailto:[log in to unmask]]On Behalf Of JG MIDDLE
> Sent: 24 December 2003 10:01
> To: [log in to unmask]
> Subject: analytes & measurands - a Christmas quiz
>
>
> Hi chaps
>
> Some recent postings and discussions with a training course
> class this year, have prompted me to pose some Christmas
> questions. I have a small side bet on who will respond first!
>
> My purpose is to stimulate debate about the words we use to
> describe the 'things' we 'measure' and whether we share a
> common understanding of them. I am not an expert, I may not
> be phrasing the questions in the right way, and I don't know
> what the right answers are, but the reponses might be interesting!
>
> The following is a list of some common 'tests' in most labs'
> repertoire (assume all are serum/plasma/whole blood as appropriate).
>
> [1] alkaline phosphatase
> [2] cholesterol
> [3] Ca125
> [4] free T4
> [5] HbA1c
> [6] oestradiol
> [7] Troponin I
> [8] TSH
> [9] SHBG
> [10] sodium
>
> In each case, can they be described as 'analytes' or 'measurands'?
>
> Is this is a silly question because the terms are equivalent,
> or is it a highly pertinent one as they have different
> meanings, or does this only matter to the 'anoraks'?
>
> And how does our understanding of what is being 'tested for'
> or 'measured' depend on the method of analysis and the
> 'signal-producing entity' within it?
>
> Happy Christmas!
>
> Jonathan Middle
>
>
>
> UK NEQAS Birmingham
> tel 0121 414 7300, fax 0121 414 1179
> This message is intended only for the above named
> recipient(s). Message content may be confidential and
> privileged. If it comes to you in error please inform the
> sender and delete it from your system.
> The opinions expressed are mine alone and do not necessarily
> represent those of UK NEQAS Birmingham, the UK NEQAS
> Organisation, the University Hospital Birmingham NHS Trust or
> University of Birmingham.
>
> ------ACB discussion List Information--------
> This is an open discussion list for the academic and clinical
> community working in clinical biochemistry.
> Please note, archived messages are public and can be viewed
> via the internet. Views expressed are those of the individual and
> they are responsible for all message content.
>
> ACB Web Site
> http://www.acb.org.uk
> List Archives
> http://www.jiscmail.ac.uk/lists/ACB-CLIN-CHEM-GEN.html
> List Instructions (How to leave etc.)
> http://www.jiscmail.ac.uk/
>
--------------------------------------------------------
This message is intended solely for the use of the individual and entity to whom it is addressed, and may contain information that is privileged, confidential, and exempt from disclosure under applicable state and federal laws. If you are not the addressee, or are not authorized to receive for the intended addressee, you are hereby notified that you may not use, copy, distribute, or disclose to anyone this message or the information contained herein. If you have received this message in error, immediately advise the sender by reply email and destroy this message.
--------------------------------------------------------
------ACB discussion List Information--------
This is an open discussion list for the academic and clinical
community working in clinical biochemistry.
Please note, archived messages are public and can be viewed
via the internet. Views expressed are those of the individual and
they are responsible for all message content.
ACB Web Site
http://www.acb.org.uk
List Archives
http://www.jiscmail.ac.uk/lists/ACB-CLIN-CHEM-GEN.html
List Instructions (How to leave etc.)
http://www.jiscmail.ac.uk/
|