Total protein

Total protein adds up every protein circulating in your blood serum. Two groups make up almost all of it: albumin, which the liver produces and which keeps fluid inside the vessels, and the globulins, which include the antibodies of the immune system. Because the liver makes most of it and the kidneys normally keep it from leaking away, the figure reflects how both organs are working, and also whether the diet supplies enough protein and the gut absorbs it.

A laboratory often reports the albumin-to-globulin ratio beside the total. A ratio above 1 is the usual expectation — albumin normally outweighs the globulins.

Roughly 6.7–8.6 g/dL in adults, per the Israeli patient reference we cite. Some laboratories print a slightly wider range, often starting nearer 6.0 g/dL.

The range printed next to your own value is the one that counts: assays and calibration differ between laboratories, which is exactly why two reports can disagree on the same blood.

No fasting is required before this test — it does not affect the result.

• Dehydration is the commonest reason and the least alarming: less water in the blood concentrates the protein that is there.
• Immune-system conditions, including autoimmune disease such as inflammatory joint disease or lupus, can raise the globulin share.
• Blood disorders such as multiple myeloma or leukaemia can raise it, because abnormal cells produce protein of their own.
• Sarcoidosis is also associated with a raised result.

A single high figure is not a diagnosis. The usual next step is to look at albumin and the globulins separately — the total alone cannot say which of the two has moved.

• Liver disease, which reduces production of proteins generally and of albumin in particular.
• Kidney disease, when protein is lost in the urine instead of being retained.
• Digestion or absorption problems, including inflammatory bowel disease, where protein from food does not reach the bloodstream.
• A diet low in protein.
• Pre-eclampsia in pregnancy.

A low total protein is a signal to look further, not a finding on its own: which protein has fallen matters more than the sum.

Total protein moving within or slightly outside its range usually produces no symptoms at all, and the test is most often done as part of a routine chemistry panel rather than because something felt wrong.

Where a marked fall is involved, swelling (fluid leaving the vessels because albumin is low) is the sign most often noticed first.