Jase: What does an ovulation test actually detect?

Kimmi: A rise in luteinising hormone—LH—in urine above the test’s stated cut-off.

Jase: Does a positive result prove ovulation happened?

Kimmi: No. It indicates an LH surge, which can help estimate timing but doesn’t confirm egg release or guarantee conception.

Prima Ovulation LH Test contains five urine self-tests with a stated 25 mUI/mL cut-off. The supplied information says ovulation often follows an LH surge by around 24–36 hours, but cycles and hormone patterns vary. This test does not diagnose infertility or other reproductive conditions. Seek clinical advice if cycles are persistently irregular or there are ongoing fertility concerns.

The supplied technical specifications state specificity of 97.14%, sensitivity of 100% and accuracy of 98.11%. These figures do not guarantee an individual result.

Image check: The preserved result image below uses the same source URL as the Menopause FSH Test result image. Confirm the correct LH interpretation layout in the enclosed manufacturer instructions before relying on the web image.

Contents:

• 5 spoon devices
• Instructions for use

Directions

USE PROCEDURE

1. Remove the protective cap and place the absorbing tip right under the flow of urine for at least 10 seconds;
2. Alternatively, collect the urine in a clean and dry container and dip the absorbing tip into the urine for 10 seconds;
3. Place the protective cap back onto the spoon device and wait 5 minutes before reading the result.

RESULTS INTERPRETATION

Negative: LH levels in urine are below the cut-off, which implies that the peak has not yet been reached. It is advisable to repeat the test daily.

Positive: The concentration of the hormone LH is equal to or greater than 25 mUI/mL. The ovulatory peak is close and the chances of conception are greater.

F.A.Q.

What happens if the results reading time is not met?


The test has been carried out correctly when the instructions for use are followed. It includes the reading time and the interpretation of the results shown at the "RESULTS INTERPRETATION" section of the instructions for use.

How to prove that the test worked correctly?


A colored line will appear at the control region (C) on the test device, showing that the test performed correctly. The absence of the colored line suggests to repeat the test with a new device and a new sample.


How to interpret the test if the control and test lines have different intensities?


The color and intensity of the lines do not affect the interpretation of the result. The test has to be considered positive regardless of the color intensity of the test line (T).


BIBLIOGRAPHY

1. Su HW, Yi YC, Wei TY, Chang TC, Cheng CM “Detection of ovulation, a review of currently available method” Bioeng Transl Med. 2017 May 16;2(3):238-246.
   
2. Leiva RA, Bouchard TP. Abdullah SH, Ecochard R.: “Urinary Luteinizing Hormone Tests: Which concentration threshold best predict ovulation?” Front public health 2017, 5: 320.