Medical Words on Your Test Results, Explained

Your test results land in your inbox, you open the file, and there they are: words you have never seen before, sitting next to numbers with no explanation. “Unremarkable.” “S.P. gravity 1.020.” “WBC esterase positive.” None of them sound like good news. The first one sounds like an insult.

Here is the reassuring truth behind most of that jargon: medical reports are written by specialists, for other specialists. They use short, flat words because they are trying to be precise, not because they are trying to worry you. Once you know what a handful of these terms mean, the whole page gets a lot less scary.

This guide explains three of the most searched-for report words in plain language: what “unremarkable” means, what S.P. gravity measures, and what WBC esterase is really telling you. It also covers what none of these terms can tell you on their own.

One important note before we start: this is general information only, not medical advice and not an interpretation of anyone’s results. Your own clinician is the person who can put your results together with your symptoms and history. If anything on your report worries you, talk to your clinician — that conversation is exactly what they are there for.

How to read a report in the right order

Most reports have a simple structure, and knowing it saves a lot of confusion. The long middle section lists findings one by one, in a fixed order. The short summary at the end — often headed “Impression” or “Conclusion” — is where the doctor pulls those findings together and says what actually matters.

So read the summary first. If it says “normal study” or “no acute abnormality,” that is the headline. The long list above it is mostly the working-out behind that headline.

Two more habits help. First, always judge a number against the reference range printed on your own report, not against a range you found online. Labs use different methods, so their ranges differ. Second, remember that a single line never tells the whole story. Doctors interpret results as a set, alongside your symptoms — never one value in isolation.

“Unremarkable” means nothing worth remarking on

Let us start with the word that causes the most needless worry. In everyday English, “unremarkable” sounds like faint praise. In a medical report, it means something much more specific: the doctor looked at that structure and found nothing unusual, diseased, or worth commenting on. It is, in plain terms, a normal finding.

Think of it from the doctor’s side. A radiologist’s job is to hunt for problems. If they find one, they have to describe it. If they find nothing, the honest, economical way to say so is “unremarkable.” The word is not a judgement on you. It is a note that says: checked, nothing to report.

Where you will see it

You will most often meet “unremarkable” on imaging reports — X-rays, CT scans, ultrasounds and MRIs — and in physical examination notes. It is almost always attached to one specific thing: “the liver is unremarkable,” “the bones are unremarkable,” “cardiovascular exam unremarkable.” Each sentence covers only the part it names. “The liver is unremarkable” says nothing at all about the kidneys, which get their own sentence a line or two later.

That is also why a report can be full of the word and still be good news. A report that calls ten structures unremarkable is a report that cleared ten structures. It only reads like bad news because it is written in the flat language of a letter between specialists, not in the reassuring language of a letter to a patient.

What “grossly unremarkable” adds

The phrase that turns a reassuring sentence into a suspicious one is “grossly unremarkable.” In everyday speech, “grossly” sounds like a warning. In medicine, it means something duller: at the level of overall appearance. Imaging can only judge what it can see, so “grossly unremarkable” means the structure looks normal as a whole.

What “unremarkable” does not mean

There are two limits worth knowing. First, “unremarkable” is not the same as “perfect.” A scan can show small changes expected for a person’s age, or a harmless variation in shape, and the radiologist may still call the structure unremarkable because those features are not a source of concern. Second, an unremarkable result only speaks for the test that produced it. A normal-looking scan does not rule out a problem that test was never designed to detect — a chemical imbalance, for example, or a problem with how something works rather than how it looks.

S.P. gravity: how concentrated your urine is

On a urine test, you may see “S.P. gravity,” “SP Grav,” “SG,” or “specific gravity.” They are all the same measurement: how concentrated your urine is — how much water it holds compared with dissolved substances like salts and waste products.

The test itself is simple. A dipstick with chemical pads is dipped into your sample and changes colour, or a few drops are put into a refractometer, a device that measures how light bends through the liquid. The refractometer is the more accurate of the two. Either way, the result is a number that compares the density of your urine with the density of pure water, which is set at 1.000.

What the number means

A typical range quoted for urine specific gravity is about 1.005 to 1.030, though your own report’s range is the one that counts. The higher the number, the more dissolved substances your urine contains, and the more concentrated it is. The lower the number, the more water it holds, and the more dilute it is.

A high reading most often points to concentrated urine — frequently because you have not drunk much fluid, so your kidneys are holding on to water. A low reading most often means dilute urine, frequently because you drank a lot of fluid shortly before the test. That is the simple version, and for most routine tests it is the whole story.

Why one number cannot diagnose anything

Specific gravity is a rough yardstick, not a diagnosis. Several things besides hydration can push it up: glucose spilling into the urine, extra protein, or contrast dye from a recent imaging test all add heavy molecules that raise the reading.

The practical point is this: a single specific gravity value, read on its own, says very little. Clinicians read it next to the rest of the urinalysis — the other dipstick results, what the sample looks like under a microscope, and your symptoms. If your result sits outside the range but you feel fine, the usual next step is simply a repeat test, not a diagnosis.

WBC esterase: a screening clue, not a diagnosis

WBC esterase — also written as leukocyte esterase, or just LE — is an enzyme released by white blood cells. A urine dipstick has a colour-sensitive pad that reacts to that enzyme, so the test is an indirect way of checking whether white blood cells are present in your urine. Doctors call that finding pyuria.

White blood cells show up in urine when the urinary tract is inflamed, and the most common reason for that is a urinary tract infection (UTI). That is why a positive WBC esterase result so often leads to a conversation about a UTI. But the test is a screening tool, not a final answer, and the distinction matters.

Negative, trace, 1+, 2+, 3+: how results are reported

A negative result is the expected, normal result — no significant white blood cell activity detected. A positive result is graded by how strongly the dipstick pad changed colour: trace, then 1+ (small), 2+ (moderate), and 3+ (large). A higher grade means a stronger reaction on the pad. It does not, on its own, prove an infection, and it does not measure how serious an infection is.

When the test is positive, the usual next step is to examine the urine under a microscope for white blood cells and other signs of infection, and often to run a urine culture when an infection is suspected. The culture — growing whatever bacteria are present so they can be identified — is what confirms the cause. The dipstick only raises the question.

Why a positive result does not automatically mean a UTI

Several things can turn this test positive without a urinary tract infection. Contamination of the sample is the most common: vaginal secretions, including blood or heavy mucus discharge, can get into the sample during collection, which is why a clean-catch sample — collected with cleansing wipes and a midstream catch — is preferred. Certain other infections, such as trichomoniasis, can also produce a positive result.

The test can also be thrown off in the other direction. High levels of protein or vitamin C in the urine can interfere with a positive result even when an infection is present. And a positive result without symptoms does not automatically need treatment: clinicians weigh your symptoms, the nitrite result on the same dipstick, and the culture before deciding anything. Nitrite is a separate chemical sign of bacteria, so a dipstick that is positive for both WBC esterase and nitrite points more strongly toward a UTI than either result alone — while a positive esterase result with negative nitrite can still fit a UTI, since not all bacteria produce nitrite.

Three lines on one report, put together

Here is a made-up example, to show how these terms sit together on a real-style report. None of this is anyone’s actual result:

Imaging: The liver, gallbladder and kidneys are unremarkable. Urinalysis: S.P. gravity 1.020. WBC esterase: negative.

Read in the order we covered, that example says: the scanned organs looked normal; the urine was moderately concentrated, within the usual range; and no white blood cell activity was detected. The impression at the bottom of such a report would most likely say something short like “normal study.” Three strange-looking terms, one calm summary.

The reverse also holds. A report with one flagged line and an otherwise ordinary summary is usually a prompt for a repeat test or a follow-up question, not a verdict. Reports are built to be read as a whole, and the summary is where the doctor tells you which lines, if any, actually matter.

What to do with your own results

If you take one habit from this guide, make it this: read the summary first, check each number against the range on your own report, and then ask questions about anything that still worries you. Which finding, if any, needs follow-up? Does this result need repeating? Does it change anything about my care? Keeping your own copies helps too — a change over time can matter more than any single value.

Medical language will probably always feel a little cold. It was designed for precision between professionals, not for comfort. But “unremarkable” is good news, S.P. gravity is a simple concentration reading, and WBC esterase is a first clue that needs confirming, not a diagnosis on its own. Knowing that much turns a worrying page into something you can read calmly — and discuss properly with the clinician who knows your full picture.

This article is general information only. It does not diagnose, treat, or interpret any individual’s results. Talk to your clinician about what your own test results mean for you.

For a related explainer, see our guide to what t.i.d. means on a prescription, our answer to how many mg are in a ml, and our conversion of 37.5, 37.6 and 37.7°C to Fahrenheit. For the sources behind this guide, see Cleveland Clinic’s urine specific gravity explainer, UF Health’s leukocyte esterase test page, Medical Associates of Northwest Arkansas on what “unremarkable” means in imaging exams, and MedlinePlus on how reference ranges vary by lab.