MAUDE Adverse Event Report: PRINCETON BIOMEDITECH CORPORATION OSOM; VISUAL, PREGNANCY TEST, PRESCRIPTION USE

Catalog Number	1004
Medical Device Problem Code	False Negative Result (1225)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	07/30/2024
Type of Reportable Event	Malfunction
Event or Problem Description
On july 30, 2024, the end user, a health care provider, notified (b)(6) (distributor) of two false negative hcg results obtained with patient urine samples.The event was reported to princeton biomeditech corp.(manufacturer) on july 30, 2024.The osom ultra hcg combo test (kit), part number 1004, lot 563l13, expiration 2025-12-31 was used.The distributor asked the user to return the kit for investigation.The end user reported getting false negative result with two patient urine samples.Quantitative hcg tests were performed and resulting values were 177,000 and 59,000 miu/ml.Both pregnancies were confirmed by ultrasound.The end user returned 66 test devices on july 31, 2024, for further investigation.The end user believed the false negatives were isolated to a single lot of osom cartridges and only occurred in some boxes.As the end user reported the issue to the distributor, who then reported the issue to the manufacturer, we (manufacturer) do not have additional information about the patient or the end user.On august 15, 2024, our investigation revealed the issue was caused by a product problem affecting about 50 test devices, across fewer than 40 boxes of product.Corrective actions were initiated, including a recall of the product lot to the end user level.
Additional Manufacturer Narrative
The subject test kit was returned by the end user.Review of batch records revealed no discrepancies, but testing of the returned test kit confirmed the reported performance issue.Patient information such as patient's name, age, and race, etc.Were not received from the end user or from the distributor.According to the information provided, the healthcare provider performed the urine rapid test (sekisui ultra hcg combo test) and obtained a negative result for two patients.The provider then performed a quantitative hcg test, which was positive for each patient.The pregnancy was confirmed by ultrasound for each patient.Through the distributor, additional information was requested from the healthcare provider, including information on timing and sequence of events and outcomes, but no response has been received.There was no adverse health event reported affecting these patients.Limitations described in package insert of osom ultra hcg combo test: as with any assay employing mouse antibodies, the possibility exists for interference by human anti-mouse igg antibodies (hama) in the sample.Similarly, specimens from patients who have been routinely exposed to animals or to animal serum products may contain heterophile antibodies which may cause erroneous results.Elevated hcg levels have been reported in patients with both gestational and nongestational trophoblastic diseases.The hcg of trophoblastic neoplasms is similar to that found in pregnancy, so these conditions, including choriocarcinoma and hydatidiform mole, should be ruled out before pregnancy is diagnosed.An extremely low concentration of hcg during the early stage of pregnancy can give a negative result.In this case, another specimen should be obtained at least 48 hours later and tested.The hcg level may remain detectable for several weeks after normal delivery, delivery by cesarean section, spontaneous abortion, or therapeutic abortion.The hcg level in the case of spontaneous abortion may be very low and eventually decrease.The test is highly sensitive, and specimens which test positive during the initial days after conception may later be negative due to natural termination of the pregnancy.Natural termination occurs in 22% of clinically unrecognized pregnancies and 31% of pregnancies overall.Subsequent testing of a new urine or serum sample after an additional 48 hours is recommended in order to confirm that the hcg level is rising as indicated in a normal pregnancy.· the concentration of hcg may be very low in the case of ectopic pregnancy.A suspected ectopic pregnancy may be further evaluated using a quantitative hcg assay.Very high levels of hcg may exist in certain pregnancies and pathological conditions (e.G., choriocarcinoma and hydatidiform mole).This may weaken the signal line.The physician should evaluate data obtained from this kit in light of other clinical information.Samples which contain excessive bacterial contamination or have been subjected to repeated freezing and thawing should not be used because such specimens can give spurious results.Urine samples collected after consumption of a large amount of fluids may contain a lower hcg concentration.If such a sample is negative, a first morning specimen should be obtained and retested.In rare occasions, persistent low levels of hcg present in men and in nonpregnant women (concentrations 3 to 100 miu/ml) may result in positive results.Batch records and performance test results were reviewed and no discrepancies were found.The qc data showed the lot was manufactured with acceptable performance at the time of product release.The returned test devices were tested with qc controls in 3 replicates.Upon investigation, the manufacturer was able to duplicate the reported issue and discovered that an incorrect component was used in about 50 test devices of the product lot.These 50 devices are estimated to be distributed across up to 40 kit boxes.As a result, the manufacturer has initiated corrective actions, including a recall of the product lot together with the distributor to the end user level.A device malfunction has been confirmed and corrective actions have been initiated, including a recall of the product lot to the end user level, expected to commence on or about sep 9, 2024.Adverse events have not occurred and are not likely to occur; however, this event should be reported as a malfunction that could result in an "other serious or important medical event.".
Event or Problem Description
On (b)(6) 2024, the end user, a health care provider, notified sekisui diagnostics (distributor) of two false negative hcg results obtained with patient urine samples.The event was reported to princeton biomeditech corp.(manufacturer) on july 30, 2024.The osom ultra hcg combo test (kit), part number 1004, lot 563l13, expiration 2025-12-31 was used.The distributor asked the user to return the kit for investigation.The end user reported getting false negative result with two patient urine samples.Quantitative hcg tests were performed and resulting values were 177,000 and 59,000 miu/ml.Both pregnancies were confirmed by ultrasound.The end user returned (b)(4) test devices on july 31, 2024 for further investigation.The end user believed the false negatives were isolated to a single lot of osom cartridges and only occurred in some boxes.As the end user reported the issue to the distributor, who then reported the issue to the manufacturer, we (manufacturer) do not have additional information about the patient or the end user.On august 15, 2024, our investigation revealed the issue was caused by a product problem affecting about 50 test devices, across fewer than 40 boxes of product.Corrective actions were initiated, including a recall of the product lot to the end user level.
Additional Manufacturer Narrative
The subject test kit was returned by the end user.Review of batch records revealed no discrepancies, but testing of the returned test kit confirmed the reported performance issue.Patient information such as patient's name, age, and race, etc.Were not received from the end user or from the distributor.According to the information provided, the healthcare provider performed the urine rapid test (sekisui ultra hcg combo test) and obtained a negative result for two patients.The provider then performed a quantitative hcg test, which was positive for each patient.The pregnancy was confirmed by ultrasound for each patient.Through the distributor, additional information was requested from the healthcare provider, including information on timing and sequence of events and outcomes, but no response has been received.There was no adverse health event reported affecting these patients.Limitations described in package insert of osom ultra hcg combo test: as with any assay employing mouse antibodies, the possibility exists for interference by human anti-mouse igg antibodies (hama) in the sample.Similarly, specimens from patients who have been routinely exposed to animals or to animal serum products may contain heterophile antibodies which may cause erroneous results.Elevated hcg levels have been reported in patients with both gestational and nongestational trophoblastic diseases.The hcg of trophoblastic neoplasms is similar to that found in pregnancy, so these conditions, including choriocarcinoma and hydatidiform mole, should be ruled out before pregnancy is diagnosed.An extremely low concentration of hcg during the early stage of pregnancy can give a negative result.In this case, another specimen should be obtained at least 48 hours later and tested.The hcg level may remain detectable for several weeks after normal delivery, delivery by cesarean section, spontaneous abortion, or therapeutic abortion.The hcg level in the case of spontaneous abortion may be very low and eventually decrease.The test is highly sensitive, and specimens which test positive during the initial days after conception may later be negative due to natural termination of the pregnancy.Natural termination occurs in 22% of clinically unrecognized pregnancies and 31% of pregnancies overall.Subsequent testing of a new urine or serum sample after an additional 48 hours is recommended in order to confirm that the hcg level is rising as indicated in a normal pregnancy.The concentration of hcg may be very low in the case of ectopic pregnancy.A suspected ectopic pregnancy may be further evaluated using a quantitative hcg assay.Very high levels of hcg may exist in certain pregnancies and pathological conditions (e.G., choriocarcinoma and hydatidiform mole).This may weaken the signal line.The physician should evaluate data obtained from this kit in light of other clinical information.Samples which contain excessive bacterial contamination or have been subjected to repeated freezing and thawing should not be used because such specimens can give spurious results.· urine samples collected after consumption of a large amount of fluids may contain a lower hcg concentration.If such a sample is negative, a first morning specimen should be obtained and retested.· in rare occasions, persistent low levels of hcg present in men and in nonpregnant women (concentrations 3 to 100 miu/ml) may result in positive results.Batch records and performance test results were reviewed and no discrepancies were found.The qc data showed the lot was manufactured with acceptable performance at the time of product release.The returned test devices were tested with qc controls in 3 replicates.Upon investigation, the manufacturer was able to duplicate the reported issue and discovered that an incorrect component was used in about 50 test devices of the product lot.These 50 devices are estimated to be distributed across up to 40 kit boxes.As a result, the manufacturer has initiated corrective actions, including a recall of the product lot together with the distributor to the end user level.A device malfunction has been confirmed and corrective actions have been initiated, including a recall of the product lot to the end user level, expected to commence on or about sep 9, 2024.Adverse events have not occurred and are not likely to occur; however, this event should be reported as a malfunction that could result in an "other serious or important medical event.".

• Brand Name: OSOM
• Common Device Name: VISUAL, PREGNANCY TEST, PRESCRIPTION USE
• Manufacturer (Section D): PRINCETON BIOMEDITECH CORPORATION; 4242 us highway 1; monmouth junction NJ 08852 1905
• Manufacturer (Section G): PRINCETON BIOMEDITECH CORPORATION; 4242 us highway 1; monmouth junction NJ 08852 1905
• Manufacturer Contact: young-a kim ; 4242 us highway 1; monmouth junction, NJ 08852-1905 ; 7322741000
• MDR Report Key: 20164422
• Report Number: 2246703-2024-00002
• Device Sequence Number: 15276778
• Product Code: JHI
• UDI-Device Identifier: 00742860100208
• UDI-Public: 00742860100208
• Combination Product (Y/N): N
• PMA/510(K) Number: K944426
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Health Professional,Distributor
• Initial Reporter Occupation: Other Health Care Professional
• Remedial Action: Recall
• Type of Report: Initial,Followup
• Report Date (Section B): 09/06/2024

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Operator of Device: Health Professional
• Device Expiration Date: 12/31/2025
• Device Catalogue Number: 1004
• Device Lot Number: 564L13
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 07/31/2024
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 07/30/2024
• Supplement Date Received by Manufacturer: 07/30/2024
• Initial Report FDA Received Date: 09/06/2024
• Supplement Report FDA Received Date: 09/19/2024
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 11/28/2023
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Other
• Patient Age: 30 YR
• Patient Sex: Female