Is Prothrombin time 28.5 high, normal or dangerous? What does PT level 28.5 mean?

📅 Medical Review Date: October 9, 2025

Your Prothrombin time level of 28.5 is a High Prothrombin time level.

A prothrombin time level of 28.5 seconds usually means blood takes longer than normal to clot. It suggests a bleeding disorder. High levels of prothrombin time can cause excessive bleeding, easy bruising, nosebleeds, bleeding gums, heavy periods, and blood in urine. This can be caused by liver disease, vitamin K deficiency, blood-thinning medications, or clotting factor deficiencies. Further tests are often needed to identify the cause and guide appropriate treatment.

High Prothrombin time levels may indicate underlying health problems. The normal range is typically between 12 seconds and 16 seconds. 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.

The normal Prothrombin time range for men is :12 - 16 seconds

Ideal values of Prothrombin time depending on age (male) :

Age	Ideal Prothrombin time value
<5 years	12.342
5-10 years	12.694
10-15 years	13.056
15-20 years	13.428
20-25 years	13.811
25-30 years	14.205
30-35 years	14.61
35-40 years	15.026
40-45 years	15.454
45-50 years	15.894
50-55 years	15.881
55-60 years	15.868
60-70 years	15.855
70-80 years	15.842
80-90 years	15.829
90-100 years	15.816
>100 years	15.803

*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.

Some examples of conditions that increase or decrease Prothrombin time levels include:

• Liver disease
• Vitamin K abnormality
• Hemophilia A and hemophilia B
• Decreased or defective factor I (fibrinogen), II (prothrombin), V or X
• Willebrand disease

Normal range of Prothrombin time found among women :12-16 seconds

Ideal values of Prothrombin time depending on age (female) :

Age	Ideal Prothrombin time value
<5 years	12.352
5-10 years	12.715
10-15 years	13.088
15-20 years	13.472
20-25 years	13.867
25-30 years	14.274
30-35 years	14.693
35-40 years	15.124
40-45 years	15.568
45-50 years	15.555
50-55 years	15.542
55-60 years	15.998
60-70 years	15.985
70-80 years	15.971
80-90 years	15.957
90-100 years	15.943
>100 years	15.929

If you take a Prothrombin time blood test and the results are not in the normal range (12-16 seconds), 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.

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

• Great Britain at the 1908 Summer Olympics
• Halolli
• Ket (Greyhawk)
• Lamayou
• Killukudy
• Kunesh, Wisconsin
• Inchamudi
• La Chapelle-en-Vercors
• Gueugnon
• Koteshwara
• Kullur
• Jorethang
• Karakulam
• Gangarampur
• Garchizy
• La Combe-de-Lancey
• Les Piards
• Girgaon, Palghar
• Haozhuang Township, Hebei
• Kalimpong subdivision
• Les Graulges
• Kappelen, Haut-Rhin
• Guébestroff
• Høyanger
• Grammont, Haute-Saône
• Jogandabhavi
• Huxi
• Kamakarahatti
• Indevillers
• Kukudakhandi
• Giustenice
• Ghuwara
• Hydershakote
• Ids-Saint-Roch
• Jarvis Island
• Gudarevu Palli
• Lanzo Torinese
• Ilambazar (community development block)
• Government of Moscow
• Kolada
• Grémonville
• Innlandet
• Honfleur
• Kingdom of Middag
• Kingdom of Ait Abbas
• Grizzana Morandi
• Golugonda
• Kalligudi
• Hormigueros, Puerto Rico
• Kingdom of the Two Sicilies
• Kemmangundi
• Hudiya
• Isola di Capo Rizzuto
• Jind State
• Gonfaron
• Kundeshwar
• Lataguri
• Laerru
• Korvikoppa
• La Ferrière-Airoux
• Gargenville
• Googal, Devadurga
• Hupari
• Kolhar, Bijapur
• Garampani
• Gavignano, Haute-Corse
• La Besace
• Ilots du Mouillage
• Jamtara
• Kiyama, Saga
• Kingdom of Garo
• Goulier
• Hongqiao, Hengyang
• Kaparatti
• Le Vivier-sur-Mer
• Giffordland
• Jangamabudagatti
• Hurtières
• La Feuillée
• Herrschaft Schramberg
• Kathiatali
• Granarolo dell'Emilia
• Harishchandrapur I (community development block)
• Jegi-dong
• Gournay, Indre
• Jû-Belloc
• Lairoux
• La Roquette-sur-Var
• Hopeville, West Virginia
• Kannauj
• Kurumbapet
• Harua
• La Neuville-sur-Essonne
• Jarjayes
• Kukarmunda
• Glencoe, Illinois
• Kisurra
• Haroué
• Guichen
• Harper Tavern, Pennsylvania
• Hudiya
• Kalangala District
• Hailles
• Hypofrontality
• Himadri Station
• Kurseong (community development block)
• Guécélard
• Kalol, Gandhinagar
• Haldwani
• Levone
• Kfar Blum
• Goutevernisse
• Gras
• Le Bouillon
• Guduvancheri
• Kavalliani
• Gandarvakottai
• Grézolles
• Koradacheri
• La Forêt-Sainte-Croix
• Hamakita, Shizuoka
• La Coulonche
• Lantilly
• Illfurth
• Hastingues
• Kattumannarkoil
• Giusvalla
• Lavagna
• Housséville
• Kulsari
• La Maison-Dieu
• Huaihua
• Iijima, Nagano
• Kanjany
• Houlle
• Garha (Ludhiana West)
• Gapennes
• Lège-Cap-Ferret
• Kanchili
• Karicharakadavu
• Grèzes, Lozère
• Introzzo
• L'Arbresle
• Hannah Island
• Ifugao
• Katipalla
• Lebrija
• Lacourt
• Greater Pibor Administrative Area
• Houck, Arizona

How the Prothrombin time Test Is Done :

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

Medical References

• MedlinePlus – Prothrombin Time Test and INR (PT/INR)
• Mayo Clinic – Prothrombin time test
• Cleveland Clinic – Prothrombin Time (PT/INR) Test