diff --git a/src/entity/examination_detail.ts b/src/entity/examination_detail.ts
new file mode 100644
index 0000000..a285cdb
--- /dev/null
+++ b/src/entity/examination_detail.ts
@@ -0,0 +1,64 @@
+import {
+	Entity,
+	PrimaryGeneratedColumn,
+	Column,
+	CreateDateColumn,
+	UpdateDateColumn,
+	DeleteDateColumn,
+	ManyToOne,
+	JoinColumn,
+} from 'typeorm';
+
+import { Status } from '../types/status';
+import { MeasurementUnit } from './measurement_unit';
+import { ReferenceRange } from './reference_range';
+
+@Entity('examination_details')
+export class ExaminationDetail {
+	@PrimaryGeneratedColumn('uuid')
+	id: string;
+
+	@Column({
+		type: 'text',
+		nullable: false,
+	})
+	name: string;
+
+	@Column({
+		type: 'text',
+		nullable: false,
+	})
+	order_no: string;
+
+	@ManyToOne(() => MeasurementUnit, { onDelete: 'NO ACTION', nullable: false })
+	@JoinColumn()
+	measurement_unit: MeasurementUnit;
+
+	@ManyToOne(() => ReferenceRange, { onDelete: 'NO ACTION', nullable: false })
+	@JoinColumn()
+	reference_range: ReferenceRange;
+
+	@Column({
+		nullable: false,
+		length: 64,
+	})
+	status: Status;
+
+	@CreateDateColumn()
+	created_at: Date;
+
+	@Column({ nullable: true, length: 256 })
+	created_by: string;
+
+	@UpdateDateColumn({ nullable: true })
+	updated_at: Date;
+
+	@Column({ nullable: true, length: 256 })
+	updated_by: string;
+
+	@DeleteDateColumn({ nullable: true })
+	deleted_at: Date;
+
+	@Column({ nullable: true, length: 256 })
+	deleted_by: string;
+}
diff --git a/src/entity/examination_type.ts b/src/entity/examination_type.ts
new file mode 100644
index 0000000..cec944c
--- /dev/null
+++ b/src/entity/examination_type.ts
@@ -0,0 +1,57 @@
+import {
+	Entity,
+	PrimaryGeneratedColumn,
+	Column,
+	CreateDateColumn,
+	UpdateDateColumn,
+	DeleteDateColumn,
+	ManyToMany,
+	JoinTable,
+} from 'typeorm';
+
+import { Status } from '../types/status';
+import { Service } from './service';
+
+@Entity('examination_types')
+export class ExaminationType {
+	@PrimaryGeneratedColumn('uuid')
+	id: string;
+
+	@Column({
+		type: 'text',
+		nullable: false,
+	})
+	name: string;
+
+	@Column({
+		nullable: false,
+		length: 64,
+	})
+	status: Status;
+
+	@ManyToMany(() => Service, { onDelete: 'NO ACTION' })
+	@JoinTable({
+		name: 'examination_type_services',
+		joinColumn: { name: 'examination_type_id', referencedColumnName: 'id' },
+		inverseJoinColumn: { name: 'service_id', referencedColumnName: 'id' },
+	})
+	services: Service[];
+
+	@CreateDateColumn()
+	created_at: Date;
+
+	@Column({ nullable: true, length: 256 })
+	created_by: string;
+
+	@UpdateDateColumn({ nullable: true })
+	updated_at: Date;
+
+	@Column({ nullable: true, length: 256 })
+	updated_by: string;
+
+	@DeleteDateColumn({ nullable: true })
+	deleted_at: Date;
+
+	@Column({ nullable: true, length: 256 })
+	deleted_by: string;
+}
diff --git a/src/entity/measurement_unit.ts b/src/entity/measurement_unit.ts
new file mode 100644
index 0000000..5316099
--- /dev/null
+++ b/src/entity/measurement_unit.ts
@@ -0,0 +1,39 @@
+import { Entity, PrimaryGeneratedColumn, Column, CreateDateColumn, UpdateDateColumn, DeleteDateColumn } from 'typeorm';
+
+import { Status } from '../types/status';
+
+@Entity('measurement_units')
+export class MeasurementUnit {
+	@PrimaryGeneratedColumn('uuid')
+	id: string;
+
+	@Column({
+		nullable: false,
+		length: 256,
+	})
+	unit: string;
+
+	@Column({
+		nullable: false,
+		length: 64,
+	})
+	status: Status;
+
+	@CreateDateColumn()
+	created_at: Date;
+
+	@Column({ nullable: true, length: 256 })
+	created_by: string;
+
+	@UpdateDateColumn({ nullable: true })
+	updated_at: Date;
+
+	@Column({ nullable: true, length: 256 })
+	updated_by: string;
+
+	@DeleteDateColumn({ nullable: true })
+	deleted_at: Date;
+
+	@Column({ nullable: true, length: 256 })
+	deleted_by: string;
+}
diff --git a/src/entity/queue_monitoring.ts b/src/entity/queue_monitoring.ts
new file mode 100644
index 0000000..25e47ae
--- /dev/null
+++ b/src/entity/queue_monitoring.ts
@@ -0,0 +1,57 @@
+import {
+	Entity,
+	PrimaryGeneratedColumn,
+	Column,
+	CreateDateColumn,
+	UpdateDateColumn,
+	DeleteDateColumn,
+	ManyToMany,
+	JoinTable,
+} from 'typeorm';
+
+import { Status } from '../types/status';
+import { Room } from './room';
+
+@Entity('queue_monitorings')
+export class QueueMonitoring {
+	@PrimaryGeneratedColumn('uuid')
+	id: string;
+
+	@Column({
+		type: 'text',
+		nullable: false,
+	})
+	slug: string;
+
+	@ManyToMany(() => Room, { onDelete: 'NO ACTION' })
+	@JoinTable({
+		name: 'queue_monitoring_rooms',
+		joinColumn: { name: 'queue_monitoring_id', referencedColumnName: 'id' },
+		inverseJoinColumn: { name: 'room_id', referencedColumnName: 'id' },
+	})
+	rooms: Room[];
+
+	@Column({
+		nullable: false,
+		length: 64,
+	})
+	status: Status;
+
+	@CreateDateColumn()
+	created_at: Date;
+
+	@Column({ nullable: true, length: 256 })
+	created_by: string;
+
+	@UpdateDateColumn({ nullable: true })
+	updated_at: Date;
+
+	@Column({ nullable: true, length: 256 })
+	updated_by: string;
+
+	@DeleteDateColumn({ nullable: true })
+	deleted_at: Date;
+
+	@Column({ nullable: true, length: 256 })
+	deleted_by: string;
+}
diff --git a/src/entity/reference_range.ts b/src/entity/reference_range.ts
new file mode 100644
index 0000000..995d6e3
--- /dev/null
+++ b/src/entity/reference_range.ts
@@ -0,0 +1,67 @@
+import { Entity, PrimaryGeneratedColumn, Column, CreateDateColumn, UpdateDateColumn, DeleteDateColumn } from 'typeorm';
+
+import { Status } from '../types/status';
+import { Gender } from '../enum/gender';
+
+@Entity('reference_ranges')
+export class ReferenceRange {
+	@PrimaryGeneratedColumn('uuid')
+	id: string;
+
+	@Column({
+		type: 'enum',
+		enum: Gender,
+		nullable: true,
+	})
+	gender: Gender;
+
+	@Column({
+		nullable: false,
+		length: 128,
+		default: '0 day',
+	})
+	age_range_min: string;
+
+	@Column({
+		nullable: false,
+		length: 128,
+		default: '999 years',
+	})
+	age_range_max: string;
+
+	@Column({
+		nullable: false,
+		length: 256,
+	})
+	value_min: string;
+
+	@Column({
+		nullable: false,
+		length: 256,
+	})
+	value_max: string;
+
+	@Column({
+		nullable: false,
+		length: 64,
+	})
+	status: Status;
+
+	@CreateDateColumn()
+	created_at: Date;
+
+	@Column({ nullable: true, length: 256 })
+	created_by: string;
+
+	@UpdateDateColumn({ nullable: true })
+	updated_at: Date;
+
+	@Column({ nullable: true, length: 256 })
+	updated_by: string;
+
+	@DeleteDateColumn({ nullable: true })
+	deleted_at: Date;
+
+	@Column({ nullable: true, length: 256 })
+	deleted_by: string;
+}
diff --git a/src/entity/service.ts b/src/entity/service.ts
index d5a712b..4d1accd 100644
--- a/src/entity/service.ts
+++ b/src/entity/service.ts
@@ -13,6 +13,7 @@ import {
 
 import { ServiceType } from './service_type';
 import { Room } from './room';
+import { ExaminationDetail } from './examination_detail';
 
 @Entity('services')
 export class Service {
@@ -29,17 +30,25 @@ export class Service {
     @JoinColumn()
     serviceType: ServiceType;
 
-    @ManyToMany(() => Room, (room) => room.services)
-    @JoinTable({
-        name: 'service_rooms',
-        joinColumn: { name: 'service_id', referencedColumnName: 'id' },
-        inverseJoinColumn: { name: 'room_id', referencedColumnName: 'id' },
-    })
-    rooms: Room[];
+	@ManyToMany(() => Room, (room) => room.services)
+	@JoinTable({
+		name: 'service_rooms',
+		joinColumn: { name: 'service_id', referencedColumnName: 'id' },
+		inverseJoinColumn: { name: 'room_id', referencedColumnName: 'id' },
+	})
+	rooms: Room[];
 
-    @Column()
-    @CreateDateColumn()
-    created_at: Date;
+	@ManyToMany(() => ExaminationDetail, { onDelete: 'NO ACTION' })
+	@JoinTable({
+		name: 'service_examinations',
+		joinColumn: { name: 'service_id', referencedColumnName: 'id' },
+		inverseJoinColumn: { name: 'examination_detail_id', referencedColumnName: 'id' },
+	})
+	examination_details: ExaminationDetail[];
+
+	@Column()
+	@CreateDateColumn()
+	created_at: Date;
 
     @Column({ nullable: true, length: 256 })
     created_by: string;
diff --git a/src/enum/gender.ts b/src/enum/gender.ts
new file mode 100644
index 0000000..f6428fd
--- /dev/null
+++ b/src/enum/gender.ts
@@ -0,0 +1,4 @@
+export enum Gender {
+	male = 'male',
+	female = 'female',
+}
diff --git a/src/schema/public.ts b/src/schema/public.ts
index a448c90..b0a69c2 100644
--- a/src/schema/public.ts
+++ b/src/schema/public.ts
@@ -20,6 +20,11 @@ export * from "../entity/service_fare"
 export * from "../entity/service_package"
 export * from "../entity/department"
 export * from "../entity/doctor_schedule"
+export * from "../entity/measurement_unit"
+export * from "../entity/reference_range"
+export * from "../entity/queue_monitoring"
+export * from "../entity/examination_detail"
+export * from "../entity/examination_type"
 
 export * from "../types/action";
 export * from "../types/error";