Fw: Thyroid Test Results - H...- Dr P

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Mandi, if the free T4 equates to 1.2, that is a little low, 1.4 is the minimum for free T4, according to Andy.

Since the free T3 is dependent on T4 for conversion, you could surmise without looking at the free T3 that it is also a quart low.

RE: [ ] Thyroid Test Results - H...- Dr P

Mandi,The TSH is in mIU and no conversion is necessary. Using the referencetables in 's Pediatrics, that value would be in the normal rangeat any age from birth thru 20 years.The free T4 equates to about 1.2 ng/dL. Again using , thatwould be in the normal range for an adult or any child over the age of 3days.Jim________________________________From: [mailto: ] On Behalf Of Mum231ASD@...Sent: Monday, April 17, 2006 10:49 AM Subject: Re: [ ] Thyroid Test Results - H...- Dr P>>>Thank you so much Dr P, I am embarrased to say that now I have foundmy glasses this is what it saysFree T4 15 pmol/LTSH 1.3 mu/LSorry and I still don;t have a clue :(Mandi in UKThis is a bit curious. Usually TSH is reported in mIU rather thanmmol/L. Using Thyrogen (Genzyme) as a model, the activity of thissynthetic TSH is 4-12 IU/mg using a bioassay. This would allow forsomegeneral comparison from mmol to IU, but it would probably be rough.Themolecular weight of TSH is on the order of 28,000, so a millimole wouldbe 28 grams per liter, an improbable amount. Could the hospital resulthave been reported in picomoles?Free T4 is easier. The molecular weight is about 780 and the standardconversion factor from nmol/L to mcg/dL is 0.078. By my quickcalculation, this would give about 1.17 mcg/dL. If your lab report istruly in mmol/L and not nmol/L, then you would have one million timesthis amount.