What causes high BUN and low FT4 thyroid?

High BUN and low FT4 thyroid can be caused by many reasons.

If your BUN is in between 6 mg/dL and 20 mg/dL and your FT4 thyroid is in between 0.89 ng/dL and 1.76 ng/dL then you need not worry as these are the normal ranges for BUN and FT4 thyroid respectively. But if your levels are lesser or greater than the above values, then there may be some problem in your body.

Normal range of BUN : 6 - 20 mg/dL

Ideal values of BUN depending on age :

Age	Ideal BUN value
<5 years	6.063
5-10 years	6.127
10-15 years	6.191
15-20 years	6.256
20-25 years	6.322
25-30 years	6.388
30-35 years	6.455
35-40 years	6.523
40-45 years	6.591
45-50 years	6.66
50-55 years	6.73
55-60 years	6.801
60-70 years	6.872
70-80 years	6.944
80-90 years	7.017
90-100 years	7.091
>100 years	7.165

*Ideal values are calculated based on our database of patient records

If you want your blood test report to be interpreted by BUN specialist, then you can upload your report. Our BUN expert will provide you with the most accurate interpretation of your blood test results and treatment within 12 hours. Upload blood test report now

1,37,160

Total number of patients treated

BUN treatment - Click to read 10 GOLDEN ARTICLES on Kidney health

Normal range of FT4 thyroid : 0.89 - 1.76 ng/dL

Ideal values of FT4 thyroid depending on age :

Age	Ideal FT4 thyroid value
<5 years	0.89935
5-10 years	0.90879
10-15 years	0.91833
15-20 years	0.92797
20-25 years	0.93771
25-30 years	0.94756
30-35 years	0.95751
35-40 years	0.96756
40-45 years	0.97772
45-50 years	0.98799
50-55 years	0.99836
55-60 years	1.00884
60-70 years	1.01943
70-80 years	1.03013
80-90 years	1.04095
90-100 years	1.05188
>100 years	1.06292

High BUN and low FT4 thyroid can be caused by a lot of reasons. If you take BUN and FT4 thyroid blood tests and the results are higher than 20 mg/dL for BUN and lower than 0.89 ng/dL for FT4 thyroid, your physician may recommend more tests to figure out the problem. You might also get these tests if your physician thinks you have some other disease.

This page has got the maximum number of views from the below mentioned cities (traffic in last 30 days):

Joshipura

Genoa

Hunli

Idel-Ural State

Jingxi

Krishnapuram, Vizianagaram

Kingdom of Arles

Isle, Haute-Vienne

Labeuvrière

Kadaiya Kalan

Lad, Bhiwani

Kalol (Panchmahal)

Korba, Chhattisgarh

Kobuk, Alaska

Leyrat

Howard Peters Rawlings Conservatory and Botanic Gardens of Baltimore

Gromo

Horse Chops Island

Lentokenttä

Ginot Aryeh

Kodiak, Alaska

Hāsalpur inscription of Nāgavarman

Lehaucourt

Kalidindi

Irixoa

Hard Scrabble and Snow Town

Kholm Governorate (Ukraine)

Katlakunta

La Haye-Aubrée

Les Salelles, Lozère

Het Wild

Kingdom of Württemberg

Laval-d'Aurelle

Karumanassery

Helstroff

Habsheim

Keshan County

La Chapelle-aux-Naux

La Prénessaye

Khavanewadi

Le Grès

Kiriburu

Gibraltar

La Celle-sous-Chantemerle

Kozhikode district

Koundal

Kansas State Board of Nursing

Koothali

Les Baux-de-Provence

General Zuazua

How the BUN and FT4 thyroid Tests Are Done :

If your doctor wants BUN and FT4 thyroid tests on you, you may need to go through these tests. During the BUN and FT4 thyroid blood tests, a pathologist will put a needle into your veins and take out a small quantity of blood. A pathologist is a physician in the medical field who thoroughly studies the causes and effects of disease. Within a few hours you will get your BUN and FT4 thyroid Test reports by your pathologist.

Medical References

• Mayo Clinic – Blood urea nitrogen (BUN) test
• MedlinePlus – BUN (Blood Urea Nitrogen)
• Cleveland Clinic – Blood Urea Nitrogen (BUN): Testing, Levels & Indication