Common "Activated Partial Thromboplastin Time" queries answered by top doctors | iCliniq

Activated Partial Thromboplastin Time

Activated partial thromboplastin time is a test that helps to assess the ability of the blood to form blood clots. It also assesses the time taken for the formations of clots from the sample of blood after adding reagents. It helps to evaluate the functions of clotting factors in the body. The normal time ranges from 30 to 40 seconds.

Recently Answered Questions Recently Answered Questions

All the answers published in this website are written by verified medical doctors, therapists and health experts. The Content has been moderated by iCliniq medical review team before publication. Post your medical clarifications on iCliniq by choosing the right specialty and get them answered. Your medical queries will be answered 24/7 by top doctors from iCliniq.

What is the treatment for acute vein thrombosis?

Query: Hello doctor, A 49-year-old patient presented with acute vein thrombosis of the lower extremities. He was admitted for acute bilateral swelling following a three-month course of hematoma formation and one episode of spontaneous hematuria. On admission, the patient is pale with multiple cutaneous hem...  Read Full »


Dr. Goswami Parth Rajendragiri

Answer: Hello, Welcome to icliniq.com. The APTT (activated partial thromboplastin time) test is positive (attachment removed to protect patient identity). So three causes should be ruled out: Hemophilia A or B. Intrinsic factor coagulation factor deficiency. That is factor 12,11,9,8. Lupus inhibitors....  Read Full »

I had abortion, then regular periods. Any cause for concern?

Query: Hello doctor, I had an abortion by a gynecologist few months back. She gave me some tablets and inserted something in my vagina. I had heavy thick bleeding, which reduced after two days. But, I did not go to meet the gynecologist after seven days. Will that cause any problems? I am having regular pe...  Read Full »


Dr. Balakrishnan R

Answer: Hi, Welcome to icliniq.com. If you have had regular periods after that episode, it only means the abortion has been completely expelled. The inner part of the uterus is empty, so it is a good sign. It is better to leave a gap of three months after abortion for next pregnancy. I hope some investigat...  Read Full »

I had an MRA of brain vessels. Please review my reports.

Query: Hi doctor, I had Magnetic resonance (MR) angiography of brain vessels. No flow of signals are noted in basilar and left posterior cerebral arteries. And a very minimal faint flow signal is noted in the right posterior cerebral artery. I have attached my Magnetic resonance angiography (MRA), current ...  Read Full »


Dr. J. Mariano Anto Bruno Mascarenhas

Answer: Hi, Welcome to icliniq.com. I have seen the attachments as well as the magnetic resonance angiography (MRA) report (attachment removed to protect patient identity). From these, I can find that the patient has suffered from a stroke. Stroke is actually a problem in brain that arises because the blo...  Read Full »

I frequently get bruises on my leg. Why?

Query: Hi doctor, I keep getting bruises on both of my legs and they are in different colors. I have not banged recently and I do not know the reason. What can it be? I am regularly using an inhaler for asthma.  Read Full »


Dr. Rakesh Kumar Bahunuthula

Answer: Hi, Welcome to icliniq.com. Easy bruisability is not an uncommon complaint and has multiple causes for it. As a baseline, you would need to undergo a panel of investigations to know regarding the status of your bleeding and clotting profile. Reasons can vary from simple normal skin tendency to vit...  Read Full »

Why does my father have repeated subdural hemorrhages?

Query: Hello doctor, My 70 year old father had undergone left frontal and parietal, right frontal burr hole craniostomy with an evacuation of subdural hemorrhage under local anesthesia (LA) and sedation last month. Before the operation, his right side was not working and the problem was resolved after the ...  Read Full »


Dr. Nene Devavrat Harihar

Answer: Hello, Welcome to icliniq.com. The SDH (subdural hemorrhage) diagnosis usually does not go wrong. Since they have operated for the same, it is veryunlikely that there is any diagnostic dilemma. Chronic SDH recurrence is known to happen. And re-exploration needs to be done for the same. The cause of...  Read Full »

What is the cause for elevation of D dimer?

Query: Hi doctor, I am 47 years old female. Before a year, I went to the ER with pain during breathing. My D dimer was elevated at 700 ng/mL. CT scan was negative for a clot. Then I have done two subsequent D dimer tests, and both the ranges were elevated. The values are 521 ng/mL and 707 ng/mL. I am takin...  Read Full »


Dr. Goswami Parth Rajendragiri

Answer: Hi, Welcome to icliniq.com. D dimer is a fibrin degraded product, and it is elevated in case of thrombosis usually like pulmonary embolism, deep vein thrombosis. For this, the investigation is done in the form of 2D echocardiography and color doppler of the leg. But you had investigated with CT sc...  Read Full »

I have petechiae rash on my legs and arms with easy bruising. Why?

Query: Hello doctor,I recently experienced a petechiae rash on my legs and arms and easy bruising. My PCP ordered blood work to look at platelet levels. The only abnormality was a slightly prolonged aPTT time (40 seconds and the laboratory reference range is 25 to 36 seconds). Further blood work was done: ...  Read Full »


Dr. Goswami Parth Rajendragiri

Answer: Hello,Welcome to icliniq.com.For the petechial rash, you need to investigate with full CBC to check platelet count. Low platelet count is one of the causes of such a rash. I suggest you investigate with SGPT and ultrasonography abdomen to check for liver disease.Your raised APTT is a surprising resu...  Read Full »

For a hemophiliac patient, it is necessary to receive coagulants for colonoscopy?

Query: Hi doctor,My son was exposed to warfare chemicals in the Navy. During his tonsil surgery, he was found to have a bleeding disorder. He is suffering from hemophilia and is undergoing a colonoscopy tomorrow. Should he receive a coagulant for this procedure?  Read Full »


Dr. Prakash. H. M.

Answer: Hi, Welcome to icliniq.com. Based on your query, my opinion is as follows: During any procedure bleeding time and clotting time that is prothrombin (PT) and activated partial thromboplastin time (APPT) are always evaluated and then only the procedure is done. If he has no clotting issues at pres...  Read Full »

ask-doctor-img Ask a Doctor Online

* Your first query consult is free!

Search for a Health Issue



Disclaimer: No content published on this website is intended to be a substitute for professional medical diagnosis, advice or treatment by a trained physician. Seek advice from your physician or other qualified healthcare providers with questions you may have regarding your symptoms and medical condition for a complete medical diagnosis. Do not delay or disregard seeking professional medical advice because of something you have read on this website. Read our Editorial Process to know how we create content for health articles and queries.