# LP Results??

**URL:** <https://forum.mssociety.org.uk/t/lp-results/3764>\
**Category:** New diagnosis and before diagnosis\
**Created:** [13 May 2013 15:45 UTC](https://forum.mssociety.org.uk/t/lp-results/3764 "2013-05-13T15:45:43Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![ssdd](https://avatars.discourse-cdn.com/v4/letter/s/53a042/32.png) [@ssdd](https://forum.mssociety.org.uk/u/ssdd)\
**Post date:** [13 May 2013 15:45 UTC](https://forum.mssociety.org.uk/t/lp-results/3764/1 "2013-05-13T15:45:43Z")

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can anyone tell me what my LP results mean they came in post today:

"Normal protien,cell count,glucose,urea and electrolytes and serum ACE. There werre positive oligoclonal bands in CSF but not in serum. "

Any thoughts? thanks

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**Author:** ![Moyna](https://avatars.discourse-cdn.com/v4/letter/m/ecccb3/32.png) [@Moyna](https://forum.mssociety.org.uk/u/Moyna)\
**Post date:** [13 May 2013 17:01 UTC](https://forum.mssociety.org.uk/t/lp-results/3764/2 "2013-05-13T17:01:46Z")

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Hi, I think about 90% of people with MS tend to have positive oligoional bands in CSF but not in serum. I think this means that your immune system is active in your CSF. If the serum and CSF match then the LP is said to be negative. Although a smaller proportion of people without MS can have a positive LP result too. The test is used as a diagnostic guide along with MRIs, physical exam and evoked potentials to help a neuro make a final dx.

Regards

Moyna x

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**Author:** ![ssdd](https://avatars.discourse-cdn.com/v4/letter/s/53a042/32.png) [@ssdd](https://forum.mssociety.org.uk/u/ssdd)\
**Post date:** [14 May 2013 09:20 UTC](https://forum.mssociety.org.uk/t/lp-results/3764/3 "2013-05-14T09:20:49Z")

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Thank you Monya. I was never given a blood test when i had my LP so does that mean it’s not valid?

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**Author:** ![Inactive\_User](https://avatars.discourse-cdn.com/v4/letter/i/3e96dc/32.png) [@Inactive\_User](https://forum.mssociety.org.uk/u/Inactive_User)\
**Post date:** [14 May 2013 11:24 UTC](https://forum.mssociety.org.uk/t/lp-results/3764/4 "2013-05-14T11:24:25Z")

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A blood test has to be taken at the same time as the CSF sample. That’s the only way they can properly compare CSF and serum.

(I think a small delay is OK. I can’t remember how long, but I think it’s a matter of hours.)

Karen x