upper limit normal

USAGE SUMMARY

The phrase "upper limit normal" is correct and usable in written English.
It is a medical term used to describe a condition where certain blood tests show a value higher than the normal range on the high end, but not high enough to indicate a problem. For example: "The patient's blood test results show an upper limit normal level of hemoglobin."

✓ Grammatically correct

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

9 human-written examples

Hyperthyroidism, defined as TSH < 0.3 MU/L and T4 > upper limit normal (ULN), was seen in 8 (1%) patients [ 32].

BioMed Research International

The upper limit normal for the PLI is 14.7x10 3 min–1 and the measurement error is ~10%.

BMC Pulmonary Medicine

Of the patients receiving zileuton, 4.4% had elevated ALT levels of ≥3× upper limit normal (ULN), compared with five patients (1%) in the control group.

American Journal of Rhinology & Allergy

In this study, inflammation is defined as increased levels of laboratory markers, constituting laboratory changes above the upper limit normal not associated with clinical symptoms requiring any clinical intervention.

British Journal of Cancer

Patients with signs or symptoms of brain metastases; inadequate liver function (bilirubin >1.5 times and ALT/AST >3 times upper limit normal); or inadequate renal function with creatinine >2.0 mg/dl were excluded from the study.

British Journal of Cancer

Patients were required to have an ECOG performance status of 0 1, creatinine clearance >60 ml min−1, left ventricular ejection fraction ⩾50%, bilirubin and transaminases <twice <span class="lh">upper limit normal and adequate haematological function, defined by haemoglobin >10 g dl−1, neutrophil count >3×10 l−1 and platelets >100×10 l−1.

British Journal of Cancer

Human-verified similar examples from authoritative sources

Similar Expressions

51 human-written examples

Similarly, patients with CRP levels >3 times the upper limit of normal (normal range 0 0.5 mg/dl) had significantly greater MRI activity scores compared with those with CRP levels ⩽3 times the upper limit of normal (p<0.001).

Annals of the Rheumatic Diseases

Elevation of transaminases was defined as values more than twice the upper limit of normal (normal = 40 IU/L).

Arthritis Research and Therapy

Laboratory abnormalities were defined as an increase of >50% above the upper limit of normal (upper normal limits in all three medical centres: ASAT⩽35 U/L, ALAT⩽40 U/L, γ-GT⩽44 U/L, creatinine⩽99  μmol/L).

British Journal of Cancer

T-ASTmax is designated as time 0. AP alkaline phosphatase, LLN lower limit of normal, ULN upper limit of normal.

Annals of Intensive Care

Adequate organ function was required as follows: neutrophils > 2.0*10/L; platelets > 100*10/L; hemoglobin > 80 g/L; serum creatinine≤upper limit of normal; bilirubin≤upper limit of normal; alkaline phosphatase <5 times of upper limit of normal; ALT/AST≤1.5 times the upper limit of the normal range except when caused by metastatic disease.

BMC Cancer

Expert writing Tips

Best practice

When discussing laboratory results, clearly specify the units of measurement and the population for which the "upper limit normal" is applicable, as these can vary between laboratories and demographic groups.

Common error

Avoid using the "upper limit normal" as a strict cut-off for clinical decision-making. It represents a statistical boundary, not necessarily a definitive line between health and disease. Clinical judgment should always be used in conjunction with lab values.

Linguistic Context

The phrase "upper limit normal" functions primarily as a noun phrase, often acting as an adjective modifying another noun. Ludwig indicates it describes a boundary within a range of acceptable values, mainly in medical or scientific contexts.

Expression frequency: Common

Frequent in

Science

80%

News & Media

15%

Formal & Business

5%

Less common in

Wiki

0%

Encyclopedias

0%

Social Media

0%

Ludwig's WRAP-UP

In summary, "upper limit normal" is a noun phrase denoting the highest value considered within the typical range for a given measurement, particularly in medical and scientific contexts. Ludwig AI confirms its grammatical correctness and common usage. It is essential for interpreting lab results and making informed clinical decisions. While there are several semantically related alternatives, such as "upper bound of normal range", the core meaning remains consistent. When using the phrase, ensure to specify the units and population, and avoid treating it as an absolute cut-off. This phrase appears most frequently in scientific literature and news reports, reflecting its importance in both research and public understanding of health-related data.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

upper bound of normal range

Replaces 'limit' with 'bound' and adds 'range' to specify the context.

normal upper range

Reorders the words for a slightly different emphasis.

high end of normal

Uses a more colloquial way to refer to the upper limit.

maximum normal value

Substitutes "limit" with "maximum" and "normal" with "value."

upper reference limit

Replaces 'normal' with 'reference' to indicate a reference range.

highest normal level

Uses 'highest' instead of 'upper' and 'level' instead of 'limit'.

above normal threshold

Focuses on the threshold above which a value is considered abnormal.

peak of the normal spectrum

Employs more figurative language to denote the upper extreme.

ceiling of normal values

Uses 'ceiling' to metaphorically represent the upper boundary.

top of the normal scale

Refers to the "upper limit normal" using the concept of scale.

FAQs

How do I use "upper limit normal" in a sentence?

You can use "upper limit normal" to describe a lab value that is at the high end of the normal range. For example, "The patient's liver enzymes were slightly above the "upper limit normal", but further investigation is needed."

What are some alternatives to "upper limit normal"?

Alternatives include "upper bound of normal range", "high end of normal", or "maximum normal value", depending on the context.

What does it mean if a lab result is at the "upper limit normal"?

It means the value is higher than the average for a healthy individual but still within the range considered typical. It may warrant further investigation, especially if other symptoms are present.

Why is it important to know the "upper limit normal" for lab tests?

Knowing the "upper limit normal" helps healthcare providers interpret lab results accurately. It provides a reference point for determining whether a value is within the expected range or potentially indicative of a medical condition.