Haemoglobin, bleeding time and clotting time (Hb, BT, CT)
Quick answer: This combined test measures haemoglobin along with bleeding time and clotting time. It is sometimes used as a basic check before minor procedures.
- SampleBlood
- TakesAbout 10 to 15 minutes
- Before the testNo special preparation is usually needed; tell staff about any blood thinners or painkillers you take.
How the test is done
- 1A finger prick is made for bleeding time, blotted every 30 seconds
- 2A little blood is collected in a glass tube for clotting time
- 3A vein or finger sample is used to measure haemoglobin
- 4All three results are reported together
What your results can mean
Reading your report
Each part has its own range; discuss the results with your doctor.
If the result is outside the usual range
Low haemoglobin can point to anaemia, and long bleeding or clotting times can point to platelet or clotting problems. These are basic checks, so abnormal results usually need more specific tests.
Who usually has this test
People before minor procedures in some hospitals, and people with anaemia and easy bleeding.
Risks and aftercare
The prick site may bruise or ooze briefly, so press with cotton.
Names and options
Also called: Hb BT CT
Listed by the hospital as
- HB, BT, CT
Questions about this test
Why combine haemoglobin with BT and CT?
It gives a quick check of anaemia and bleeding risk before minor procedures. Many hospitals now use a CBC and clotting tests instead.
Is this test enough to clear me for surgery?
Not always. Your surgeon may want other tests depending on the operation and your health.
Can medicines affect the BT and CT results?
Aspirin and blood thinners can lengthen bleeding and clotting times. Tell the staff, but do not stop medicines without advice.
Related tests
Tamara Hospital & IVF Centre, Rajajinagar
34/3, 10th Cross Road, opp. Vardhaka Sardar Patel School, 1st N Block, 2nd Stage, Rajajinagar, Bengaluru 560010
The hospital is open 24 hours. Call before you come to check the timing for your scan or sample collection.
Get directions ↗IVF Pulse fertility care at Tamara Hospital →
Reception
Waiting area
IVF lab
This page explains each test in general terms so you know what to expect. It is not medical advice: your doctor decides which tests you need and what your results mean. Reference ranges differ between laboratories. Updated 4 November 2026.