Is BUN 47 high, normal or dangerous? What does Blood urea nitrogen level 47 mean?

📅 Medical Review Date: September 17, 2025

Your BUN level of 47 is a High BUN level.

High BUN levels may indicate underlying health problems. The normal range is typically between 6 mg/dL and 20 mg/dL. If your levels are outside this range, it's important to speak with a healthcare provider. Consulting a doctor is recommended to determine the cause and appropriate next steps.

Important - Scroll to the end of this article to see how our patients managed their high BUN levels

The normal BUN range for men is :6 - 20 mg/dL

**Ideal values of BUN depending on age (male) :**
Age	Ideal BUN value
<5 years	6.282
5-10 years	6.577
10-15 years	6.886
15-20 years	7.21
20-25 years	7.549
25-30 years	7.904
30-35 years	8.275
35-40 years	8.664
40-45 years	9.071
45-50 years	9.497
50-55 years	9.943
55-60 years	10.41
60-70 years	10.899
70-80 years	11.411
80-90 years	11.947
90-100 years	12.509
>100 years	13.097

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

Misdiagnosis is more common than people think—and the consequences can be serious. Delayed treatment, unnecessary medication, or worse. If you want a second opinion on your blood work, one option is to upload it to a site like wholebodyprotocol.com, where world-class doctors review your results. They charge a small fee—around $90 (though you'll want to check the latest price as it fluctuates)—and email you a detailed report. With over 12 million people affected by misdiagnosis every year, that little bit of extra peace of mind can go a long way.

Important - Read more questions about high BUN levels after this video message

Important - At the end of this article read how our patients treated their high BUN levels

Some examples of conditions that increase or decrease BUN levels include:

Kidney failure
Decreased blood flow to the kidneys
Congestive heart failure
Dehydration
Conditions that can block the flow of urine

Important - At the end of this article read how our patients treated their high BUN levels

Also Read :How our patients treated their high bun?

You can learn techniques to reduce high BUN levels by reading this 100 page eBook. This book is written by a patient himself and reviewed by the doctors of Medchunk. Read eBook here.

Normal range of BUN found among women :6-20 mg/dL

**Ideal values of BUN depending on age (female) :**
Age	Ideal BUN value
<5 years	6.29
5-10 years	6.594
10-15 years	6.913
15-20 years	7.248
20-25 years	7.599
25-30 years	7.967
30-35 years	8.353
35-40 years	8.757
40-45 years	9.181
45-50 years	9.625
50-55 years	10.091
55-60 years	10.58
60-70 years	11.092
70-80 years	11.629
80-90 years	12.192
90-100 years	12.782
>100 years	13.401

Also Read :Symptoms of High BUN

Can Low or High BUN cause Heart Problems?

Read on to know how abnormal BUN affects heart

Know more

If you take a BUN blood test and the results are not in the normal range (6-20 mg/dL), your physician may recommend more tests to figure out the problem. You might also get this test if your physician thinks you have some other disease.

Important :How our patients treated their high bun?

This page was viewed the most from these cities in the last 30 days:

Gertwiller
Gimat
Herrin, Nord
Kparblee District
Lampua
Kabaena
Hohfrankenheim
Kovilpatti
Haut-Loquin
Gohana
Kirhalashi
Hélène Island
Girinaikwadi
Hararit
Khata Khedi
La Motte-Fanjas
L'Isle-en-Dodon
Karadikop
Guirim
Indian Territory
Le Plessis-l'Échelle
Kibawe, Bukidnon
International Energy Agency
Karanjia
Kedma, Israel
Khiali Chehlan Wali
Huillé
Le Housseau-Brétignolles
Larret
Giuliopoli (Rosello)
Kunri
Hyoja-dong
Gir Gadhada
Kyathampalle
La Prévière
Garapadu
Juee
Jussy, Yonne
Kurubavandla palli
Guardian Rock
Hîncești District
History of the Comoros (1978–89)
Henry Lawrence Island
Isabela, Basilan
Kalleli
La Robine-sur-Galabre
Lantana, Florida
La Chaussée, Vienne
Ivano-Fracena
Lanhouarneau
Kharba
Gruyères, Ardennes
La Mothe-Achard
Latiano
Kaluvoya
Kendall, Washington
Haligeri
Iqrit
Kolu Khedi Kalan
Gensac-de-Boulogne
La Sauvetat-sur-Lède
Kazumba Territory
Le Planois
Kargil
Le Mesnil-au-Grain
Jamalpur, Bihar
Ivory, Jura
Le Pondy
Gosaldo
Koll Rock
Hussniyya
Hyderguda
Khandola
Kani-Kéli
Hautes-Duyes
Jagny-sous-Bois
Kadoli
Kingdom of Bumthang
Ganeor
Langatte
Hem-Hardinval
Kodakarajima
Gripport
Kuri, Bhopalgarh
Hillion
Grévillers
Gloucester
Hardoi
Lagnes
Kvinnherad
Jhuruli
Germigny-des-Prés
Kachivani Singaram
Lazi, Siquijor
Ibim
Huliyar
Hradaspur
Konardihi
Gervans
Kukkundoor
Haplincourt
Hanumantpada
Gurnee, Illinois
History of Western Australia
Gorubathan (community development block)
Hirehalli
La Mothe-Achard
Kundapur
La Chaux, Orne
Good Intent, Pennsylvania
Halaga
La Tour-en-Jarez
Hocabá-Homún
Kalavad
Haleyuru
Gravellona Lomellina
Kankai
Lanet
Karasjok
Ivergny
Khyad
Green Valley, Los Angeles County, California
Ibara, Okayama
Kiyama, Saga
Grez-Neuville
Kozhikode Beach
Guan (state)
La Ferté-en-Ouche
Islampur, Nalanda
Kyangwali Refugee Settlement
Idhna
Gambyapur
Jangipur subdivision
Illtal
Jhargram (Vidhan Sabha constituency)
Kokalpur
Grenant
Jambhavali
Kintzheim
La Vicogne
Lavérune
Kasol
Lalru
Gugney-aux-Aulx
Kabirchowk
Gangapur, Bhilwara
Lavacquerie
Gualtieri Sicaminò
La Chapelle-Rambaud
Kodigenahalli

How the BUN Test Is Done :

When your doctor orders a BUN test, it involves a straightforward blood draw to measure your BUN levels. A pathologist or lab technician will take a small sample of blood from a vein using a needle. Your BUN test results are usually available within a few hours.