Question about lab report

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Jason - 24 Apr 2007 21:48 GMT

I have some questions re: to my lastest blood test and urine test.

Medical problems:
calcium deposits on my lungs.
hypothyroidism
sleep apnea
edema

Reference ranges were listed on the blood test form for all items except
for these three items. Please check the PDR or other reference books and
list the standand reference ranges for these three items:

This was NOT a 24 hour urine test--it was a spot test of urine.
urine sodium
urine potassium
urine chloride

Please comment on these results:
serum sodium 140 (135-145)
serum potassium 3.7 (3.5-5.1)
serum chloride 103 (98-107)

This was NOT a 24 hour urine electrolyte test--It was a spot test of urine.
urine sodium 20
urine potassium 25.3
urine chloride 26

TSH 7.56 high (0.27-4.2)

I found this quote in a book:

"Urine sodium concentration is useful in determining the cause of
hyponatremia. Urine sodium <20 mEq/L reflects sodium conservation by the
kidneys and is found in ECFV depletion and edematous states CHF, nephrotic
syndrome and cirrhosis."

I would appreciate your comments,
Jason
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Differential
Eosinophils 6.5 high (0-4)

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00doc - 25 Apr 2007 02:06 GMT

> I have some questions re: to my lastest blood test and urine test.
>
[quoted text clipped - 17 lines]
> serum potassium 3.7 (3.5-5.1)
> serum chloride 103 (98-107)

These are all normal.

> This was NOT a 24 hour urine electrolyte test--It was a spot test of
> urine.
> urine sodium 20
> urine potassium 25.3
> urine chloride 26

> I found this quote in a book:
>
> "Urine sodium concentration is useful in determining the cause of
> hyponatremia. Urine sodium <20 mEq/L reflects sodium conservation by the
> kidneys and is found in ECFV depletion and edematous states CHF, nephrotic
> syndrome and cirrhosis."

Urine sodium is usually measured when the serum sodium is low and you want
to to see if the person is excreting sodium or retaining water (the answer
is almost always retaining water). You can look at the gross amount (as the
quoted text does) or calculate a fractional excretion of sodium (abbreviated
FENA) but to do that you need the serum and urine creatine levels.
http://www-users.med.cornell.edu/~spon/picu/calc/fenacalc.htm

There are some other reasons to measure urine electrolytes (but usually an
ammonia level is included) so you will have to ask your doctor why he
measured them and how he interprets the tests.

> TSH 7.56 high (0.27-4.2)

That's a little high (suggesting the thryoid hormone levels are a little
low) but it is debatable whether it should be treated.

> Differential
> Eosinophils 6.5 high (0-4)

This suggests you have allergies.

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00doc

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Jason - 25 Apr 2007 03:36 GMT

> > I have some questions re: to my lastest blood test and urine test.
> >
[quoted text clipped - 53 lines]
>
> This suggests you have allergies.

~~~~~~~~~~~~~~~~~~~~~~

doc,
thanks--I'll visit the website that you mentioned.
jason

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