d-dimers always raised.

[kimlo]

I've had these tested twoce. Once was random when I wanted to change pill because I have a family history of blood clots. That time they said I had raised d-dimers and fibrin.

The second time I had to have a ct scan to check for blood clots.

Nobody seems bothered by it, but what could it be?

Where in the world are you based?
That seems complete diagnostic overkill tbh.
But I'm in the UK/NHS where evidence based medicine is practice, not profit based.

I'm in the uk.

OP
Im the same, In the UK, NHS...

No idea why... Same as you, once had to have a scan to rule it out

the forst time they wouldn't change my pill from the mini pill due to the family history of blood clots, the second I had chest pains.

This is very often tested in 'normal' practice @Pacif1cDogwood

so just one of those odd things?

Thats really strange.

A negative d-dimer can be used to exclude a DVT or VTE, a positive result does not mean that you have a clot, it means further investigation is required (doppler US) to exclude a clot.
A raised fibrinogen is seen in inflammation/infection.

I was under the impression that 'random' D-dimer testing is pretty non-specific?
I suppose a higher level may inform a decision whether to take the risk of a combination pill, but D-dimer can be raised for all sorts of reasons.

Here is an example of very specific indications for carrying out D-dime test in an English NHS trust

Infection would explain the last one, since the chest pains were caused by a chest infection.

NHS Scotland here but I have never carried out a random d-dinner test in the lab, only ever for exclusion of clots or to we have added it on as a test to aid diagnosis of DIC. I’m not sure what the acceptable range would be for deciding on whether a pill is ok or not.

kimlo, I've just reread your first post.
Surely you must have a haematologist who could explain all of this to you?

I am not an expert.
D-dimer can be raised for many reasons, as can fibrinogen.
Infection/inflammation are common causes.
I expect yours may have been done in the context of looking for a familial or inherited clotting disorder?
It gets v complex there, and you best address your (v valid) questions to an expert in the field.

What I meant with 'diagnosic overkill' (I like a bit of hyperbole and flippancy, me ) is that IME it would not be used to inform that change of a pill or used as a 'routine' blood test. There's usually a very specific indication.

no I don't have a heamotologist. It was the gp for the pill and she seemed fine with it, but did say I was at risk from blood clots.

Then that was that, nothing more done.

The hospital did the test when a different gp refered me for chest pains, did a ct scan and sent me off with antibiotics.

No one seems bothered by it. I'm just wondering what it is.

I've never ordered this test for someone starting the pill  - if there were risks, I'd be following guidelines for less risky options.

My local area works similar to what @Pacif1cDogwood suggests, using the test only as a diagnostic aid in specific circumstances.

You might have a minor underlying clotting problem which is of little consequence in day to day life, but the only way you'd know is for a haematologist to assess you and even then you might not get a definite answer.

Raised fibrin can be seen with pcos too which is why fertility clinics often offer to test for clotting disorders - because raised fribrin with certain clotting disorder mutations and pregnancy can be a nightmare.