**Question:** A pregnant female presents with pain in abdomen on examination, tenderness is found in right lumbar region. TLC is 12000/cmm. and urine examination is normal. For diagnosis further test done is

A. Ultrasound
B. Blood Culture and Sensitivity
C. Abdominal X-ray
D. Serum beta-human chorionic gonadotropin (beta-hCG) level estimation

**Correct Answer:** .

**Core Concept:** In pregnant females, acute abdominal pain can be due to various causes like appendicitis, ectopic pregnancy, cholecystitis, or pelvic inflammatory disease (PID). However, the clinical presentation in this case, including tenderness in the right lumbar region, high white blood cell count (TLC), and normal urine examination, suggests a possible tubo-ovarian abscess (TOA), which is a complication of PID.

**Why the Correct Answer is Right:** Among the given options, the correct test to be done is:

**D. Serum beta-human chorionic gonadotropin (beta-hCG) level estimation:** Beta-hCG is a hormone secreted by the placenta during pregnancy, and an elevated beta-hCG level indicates a possible ectopic pregnancy or ongoing pregnancy with threatened abortion. In this case, beta-hCG estimation is essential to rule out an ectopic pregnancy and confirm the ongoing pregnancy.

**Why Each Wrong Option is Incorrect:**

**A. Ultrasound:** While ultrasound is a crucial diagnostic tool in obstetrics and gynecology, in this case, it is not the most appropriate test to confirm the diagnosis. Beta-hCG estimation is more specific for the given clinical scenario.

**B. Blood Culture and Sensitivity:** This test is performed to identify and determine the antibiotic sensitivity of bacteria causing an infection. In this case, it is irrelevant as the focus is on ruling out ectopic pregnancy or confirming ongoing pregnancy with threatened abortion, not identifying a bacterial infection.

**C. Abdominal X-ray:** An abdominal X-ray is essential in cases of suspected bowel obstruction, perforation, or free gas under the diaphragm. In this case, it is not the most appropriate test to confirm the diagnosis of PID or tubo-ovarian abscess.

**Clinical Pearl:** Tubo-ovarian abscess (TOA) is a serious complication of pelvic inflammatory disease (PID), which is generally caused by sexually transmitted infections like Chlamydia or Gonorrhea. In this scenario, the correct test to confirm the diagnosis is beta-hCG estimation, as it helps to rule out an ectopic pregnancy, confirm an ongoing pregnancy, and evaluate the response to treatment.

**Why the Correct Answer is Right:**

In this scenario, the correct test to confirm the diagnosis and to assess the clinical condition is:

**D. Serum beta-human chorionic gonadotropin (beta-hCG) estimation:** Beta-hCG is a hormone produced by the placenta during pregnancy.